Best single player game?

Hello everyone,
      So im strictly a multiplayer kind of guy and have been playing csgo competitively for about 5 years now (not that it matters lol) and ive never really step foot into the single player realm except for gta v on console. What games should I buy? Best single player games?

Please help.

Thanks!
I didn't find the right solution from the Internet.

References:
pcpartpicker.com/forums/topic/205294-best-singlgthrthrthrth
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