I know that Windows defender sucks. At times, I would even use scripts to disable windows defender and auto update. But with time, I realized that, we need at least windows defender, even if it sucks at it's job. You know? Like a basic defense. It's better then having nothing. Someone might say, why not just use other third party antivirus? My device is old, I try to install as minimal as possible to keep the load minimal. For me, it felt, heavy when using an antivirus. Background running services makes it more worse. That's why.
Then you have a problem that is clearly detected and the solution of which you have to work on, and that is buying a new computer - by that I mean a really new one from the store, not a used one. Be sure to take into account that the computer has at least 8 GB of working memory, which is a minimum for pleasant work, and also that it has a solid processor and graphics card.
Until then, follow the advice from my previous post and don't use pirated software - and if you need a cheap license for a program, you can try to find it in
Digital goods. Of course, be careful who you trade with.