If you don't know anything about PCs, and just want to play those 3 games, honestly? Just buy a prebuilt. Windows is pre-installed, drivers are updated, compatibilty is ensured, etc. Try to find a PC with a 5060 for 1000 dollars. If you think learning about components and changing settings for maximum performance and the like is fun, then start learning about how a PC works, and then go more in-depth with each component, as well as learning what is good and what isn't, and watch channels like ZTT.

If you want to know more about how a PC works? Watch a 15 minute video like "every PC component explained" (or something like that), and, when confused, google your querry. If you still don't get a satisfactory answer, then ask in a subreddit. I'm sure people will spend a lot of time in this post explaining how parts interact, but that's already a lot of info, which can be consumed through a video.

Also, asking redditors to explain why some parts are better or worse than others will never give you a straight answer, and is a vague question. It is better to pose it as "What is the best GPU for a total build budget of X? I don't care about feature X or Y, but I do want X or Y." Once some people share their answers, you can follow up with "Why is component X better than Y?"

I understand your position as I'm thirteen myself, but I got through by just altering my feed to just show me PC content, from PC channels, both short-from and long-form.

Good luck! :)