Yes I find brain fog gets in the way.
One thing you can try - do you tend to have your phone on you all day? If not, get a piece of paper or small notebook and a pen and carry those around. Every time you come across something which is adding to the "Aaargh WTF why is it like that????" feeling, write it down on a list.
By the end of the day you'll have a list with lots of small things, e.g. mine would have things like "Cooker grease marks can't get clean" "Kitchen water not hot" "DS2 refusing to eat dinner (left too late)" "XMIL driving me bonkers" "Clutter on floor in way of fridge".
You can then translate these into proper issues, if you want to, and then it might be easier to see which of them are actually within your control.
Also, Chat GPT is actually fairly good if you sit down and brain dump a gigantic rant of everything that is weighing on you and ask it to please sort them out into a coherent list, it will do that for you and I've found that helpful previously. Chat GPT is also great in that it never gets pissed off with you and you can make as many adjustments as you want. Whereas humans... I find if you start by trying to get someone to help you organise the tangled thoughts, they mean well, but when you try to explain some of the tendrils they get frustrated or lose track. Or if you try to explain why solutions won't work, they get annoyed and think you are making excuses.
If you have executive functioning challenges, which can be related to ADHD but also some other things such as perimenopause, general tiredness, thyroid disorders, depression, and high stress levels - then not only will it be difficult to do all of the stuff that needs to get done, it will also feel impossible to even tease out what needs to be done or how or where to start, because it impedes planning, prioritising etc.
A different strategy is just - don't. Don't worry about working out where to start. Just start literally ANYWHERE.
So you mentioned clutter and moving-house admin. This is also my current top priority and it basically has to take precedence over and above everything else. I also have settling the kids into a new childcare place as the second priority, and I've worked out I can only focus on three at a time or I don't make progress on anything. But honestly, clutter and moving house admin is so enormous that it's taking up two slots. I was going to have my own energy levels as a third priority, but I think that I just have to have the house and the childcare thing as the only ones realistically.
But the game changing part about this system at least for me, is that it means I get to drop the guilt on everything else.
Kids have too much screen time? Oh well! Everyone is eating pasta and nuggets rotated forever? Fed is best! My clothes don't match? Literally, who cares?
Dropping the guilt helps because a lot of the time the guilt is a completely useless weight anyway. It doesn't HELP if I am UNABLE to work on all of the things at once. If ditching unnecessary, not-useful guilt allows me some brain space, energy and time in the day to work on the things that matter, then it will help make things easier overall, which will free up some space to work on some of the other things. In time. When I am ready to do that.