Why not just get a console? What games do you want to play?
You will absolutely not be able to build any kind of gaming PC that would compete with the newest PS5 or Xbox for that price.
You can get a PS5 where I live for $400-500 and you will not be able to build a gaming PC that will outperform it or even be on par with it for that price.
@Mongrel am I wrong? I can't imagine how on Earth you'd build a gaming desktop that at least matches PS5 performance for less than $800-900 -- certainly not for $500. Am I wrong?
I admit I might be, I know my way around the technology, I used to build and mod my own machines but it's been several years so I'm out of the loop in terms of part prices these days.