Help Building A Gaming PC

Hi there.

I would like to start by saying that I am a complete newbie when it comes to PC building and I know there are sites you could use to build a PC. So which site do I use? Preferably a site that would tell me if I chose parts that are not compatible with each other.

I plan to build a PC maybe this year or next year. I want a PC that will let me play Elden Ring, God Of War Ragnarok. You know, the games with demanding specs. I don't plan to use minimum specs. So which parts do I use? Should I go for Intel or AMD? Budget is around 900 to 1300 USD. It still depends.