I thing it's becoming an adult + mediocre SP games + GPU market BS + GaaS games + BR fad + incompetent destruction of older IPs that's burnt a lot of people like myself out.
Top notch SP games like GoW, TLOU2, TW3, Nier: Automata are few and far between nowadays since publishers play it safe and are just interested in extracting as much money out of the customer as possible by including in-game currencies and MTs.
I mean it's 2022 and people are still playing GTA V ffs. Even the 2022 lineup looks weak to me, none of the games that are coming out are interesting with the exception of few indie titles on my radar (Stray for e.g.,). Out of the big names I'm mildly interested in Starfield but I have no faith in Bethesda after FO76 so I've got my expectations dialed down. Also looking forward to MW2 after the last 2 garbage CoDs.
I mostly enjoy playing with friends now for the same reason, I played a ton of Warzone during 2020 to early 2021 and it was a blast until it turned into a joke, if you have a friend to play with I highly recommend playing 'A Way Out' and 'It Takes Two' on Gamepass.
BTW 'Guardians of the Galaxy' comes out on GamePass today I think, it's a decently polished linear SP experience worth checking out so give it a try.