I skipped BFA and 2/3rds of Shadowlands in WoW and missed out on alot of FOMO.
You will live, just stop playing something you dont enjoy or change how you play the game. You don’t “need” the FOMO stuff.
Grind some gear, characters or play with people.
Also I completed the season “FOMO” collections in 3 days. It’s not like you are stuck grinding for 2+ months for it all.