I've been in and out of WoW a lot ever since Wrath, that's when it started going downhill for me. I buy the expansions in the hope it will actually reinvigorate my love for the game, never happens.
I tend to pley different things now, not once specific game but I can list a few I have played.
Destiny 2 (only recently because it was free), I liked the original Destiny, Destiny 2 has been great so far, haven't got Forsaken yet.
Dying Light
Two Point Hospital
Ark: Survival Evolved (gets boring real quick)
Ducktales Remastered
Prison Architect
Red Alert Unplugged (Alpha)
Overwatch
PUBG (is shit)
I try to play different things, haven't touched any other MMORPG's, maybe that's a common thing? Maybe it's not WoW that's getting worse, we're just falling out of love with MMORPG's as a genre? Just a thought based on my own perception.