I enjoyed the MCU up until Age of Ultron. The movies are almost all from the same mold, just with different names and look and that was true even before the first Avengers film. But it was new back then. The newness has worn off and it's way past time the MCU evolves, or retires.
The exception are the Guardians of the Galaxy series. They are better made films that actually made me feel invested in the characters. The beginning of Guardians 3 is probably the best scene in the entire MCU.
Age of Ultron is where I started to check out too.
The last MCU movie I watched was Black Panther (the first). I enjoyed it well enough compared to the recent fair that I decided to go out on a high note.
By that point all the CGI was cringe AF, I can't watch giant battle scenes without my minds eye seeing all the actors pantomiming on a massive green screen set. Really, one or two impressive practical effects and I might have stuck around longer.
At least BP had a couple new plot elements and wasn't just the same movie with different beam colors. Not really new elements, but new for the MCU anyway.
Dude, it was just the lion king but worse. And tchalla character goes backwards, he was so cool in civil war (another overrated movie) but he's punkd so hard in his own movie
For me, The Black Panther lost my interest when a super advanced, technologically-driven state decided that the best way to choose a ruler was to have two guys punch and kick each other.