I've documented on these boards before that other than a handful of 1-3 session mini campaigns (1 in 4e, 1 in 3.5, 2 in 5e) I have played zero actual "D&D" or derivatives since 2011.
Since then I've played a ton of Savage Worlds (300+ sessions), but have also played GURPS, Dungeon World, Ironsworn, FFG Star Wars, Tiny Dungeons/Tiny Frontiers, Fate Accelerated.
I've also read but not played Fantasy Craft, Burning Wheel, Night's Black Agents, Court of Blades, Novus, The One Ring, Radiance RPG, Masks, and Level Up.
And the thing of it is, I've discovered that you either want "D&D", or you don't.
Me? I don't really want what "D&D" offers anymore. I don't want class and level, gamist focused, DM driven adventures. Like at all.
Whatever it is I want, it isn't "D&D". I only say that because in 2009 I got tired of looking around to find the ultimate "D&D but not D&D" system, only to become disillusioned as you seem to be, when I realized that to break the "D&D" malaise, I had to make a break with its core assumptions.
Take my advice --- try getting as far away from D&D as possible and see where it takes you. I am 10-12x happier with my gaming now than I ever was in 2011 or before.