I get what you mean about Netflix, but if you are struggling for money then anything that you don't need and can't afford, is a luxury. Lots of people get by with just freeview type tv because they can't afford anything else.
Download the MSE budget planner and enter everything onto there.
Look at how much convenience foods you buy (if any), and also if you buy coffees, lunch out etc, as all that is luxuries not essentials.
Clothing - only needs to be bought when outgrown or worn out, same with shoes.
See if you can drop a brand in all your supermarket shopping and shop in the cheapest supermarket that you can get to.
Every single thing that you buy - ask yourself do I actually need this? Do you need a new jumper, do you need a new coat?
See if you have anything that you can sell on vinted, use a cashback shopping website, there are lots of things you can do to bring in a little bit more.
I agree with PP too, don't compare yourself with others. As a single parent we had a lot of cheap caravan holidays while DD grew up, while others went abroad on All Inclusive etc. Most of them were paid for with credit cards.
The fancy cars, on finance, the fancy clothes, hair, nails, all on credit cards and all completely unnecessary.