I understand your views, I agree with some aspects of them, but I don't believe it is as simple as that.
I will preface what I am about to post by saying I absolutely condemn the actions of Hamas. 7/10 was an abhorent, vile, act. I do however, think the Palastinian people are also oppressed by Hamas.
However, the counterpoint to calling everyone who is arguing for an end to the killing of Palastinians 'pro-Hamas' or 'anti-semetic' is it completely disregards the actions of the Israeli government, not just in Gaza since 7/10 but in the West Bank and Gaza for a long time prior to that.
1,000 Palestinians have been killed in the West Bank since 7/10, 20 of whom were killed by Israeli Settlers.
Excluding the casualties from the Gaza conflict and 07/10 (which won't be included in the official figures until it can be verified after the war) - since 01/01/2008 across Gaza, West Bank and Israel there have been:
7,354 Palestinian deaths and 163,775 injuries
377 Israeli deaths and 6,720 injuries
In the West Bank alone:
1,998 Palestinian deaths and 100,669 injuries
180 Israeli deaths and 2,547 injuries
https://www.ochaopt.org/data/casualties
Since 2009 in the West Bank, 13,506 structures have been demolished and 21,516 people have been displaced.
https://www.ochaopt.org/data/demolition
Even if you believe that the people of Gaza are acceptable casualties in the war against Hamas, what is the excuse for the actions in the West Bank?
A lot of the blame is put on the Palastinian people rather than Hamas because of the apparent celebrations following the attack. But celebrating death in the wider conflict is not limited to Palastinians.
There were celebrations by West Bank settlers of the death of 18 month old Ali Dawabsheh, who was burned alive in a settler arson attack which also killed his parents and badly injured his brother. At an Israeli wedding his photo was stabbed by guests, and his grandfather was taunted outside the court where the trial eventually took place of two of the perpetrators with chants of: "Where's Ali? There's no Ali. Ali is burned. On the fire. Ali is on the grill" and "Where is Ali? Where is Riham? Where is Saad? It's too bad Ahmed didn't burn as well."
(excuse the Wikipedia link but it sums up the different sides. There is lots more info on various media outlets, but many obviously have their biases, so it is easier to use Wiki as a summary: https://en.wikipedia.org/wiki/Duma_arson_attack )
In 2014 when Israelis, who were supposedly living in fear from Hamas rocket attacks, brought their children, camping chairs and food and drink to watch and celebrate while bombs were raining down on Gaza:
https://www.theguardian.com/world/2014/jul/20/israelis-cheer-gaza-bombing
This is just two examples - there are others.
The vast majority on those marches do not think Hamas are the good guys, but Hamas's desire for Israel not to exist is no different to the Israeli governments desire for Palestine not to exist and civilians on both sides have behaved appallingly in celebrating the deaths of each other.
Members of the Israeli government have used 'River to the Sea' rhetoric in support of a Greater Israel, have actively called for the forced re-location of the Gazan population and are continuing to annexe the West Bank with the open and expressed aim of making a 2 state solution impossible.
When you consider all of that alongside the fact that Palestinian deaths outnumber Israeli deaths 5 to 1 across the territory and 11 to 1 in the West Bank and Palestinian injuries outnumber Israeli injuries 24 to 1 across the territory and 40 to 1 in the West Bank is it any surprise that people aren't willing to see Israel purely as the victim in all of this?
None of it is right, and it is innocent Israeli, Jewish and Palestinian men, women and children are the ones that suffer, but it is absolutely not as simple as self-defence following the 7/10 attacks.
You said you felt that 7/10 was under the carpet - but it was 2 years ago. It was everywhere for weeks and weeks when it happened - but it is not surprising that it's the increasing Gaza death toll that is in the news now.
As for the Peace Process - it's not getting the support because people don't believe they Israeli government are acting in good faith. Netanyahu started rolling back the agreement within hours of it being announced and Ben Gvir and Smotrich threatened to resign if the deal as written was enacted which would collapse the government. The fact that they haven't resigned strongly suggests that Netanyahu has given them some kind of assurance.
As far as I am concerned, it is a plague on all their houses (Hamas, the Israeli government and the extremist settlers). I'm on the side of the innocent Palestinian and Isaraeli people who just want to live in peace.
I haven't been on a Palastinian March and I will condemn those that attend and shout anti-semetic or pro-Hamas chants.
Personally I think the marches have run their course - particularly after the Manchester attack, but I will not condemn the majority that want to show their disgust at our government for continuing to arm the Israeli government because they want to see an end to the killing.