Advice for buying a gaming PC!

Hey everyone, I'm just dropping this here to avoid starting a whole new thread... I'm looking to pick up a monitor for $400 specifically for playing PUBG and CS:GO. I'd love a 24-inch model, though anything larger would be even better if possible. Hoping to get some solid advice from 🙂
Thanks in advance!

There’s already a thread dedicated to monitors click. The recommendations are pretty much identical