I think some years are better than others but generally there’s at least a fair amount of good anime every year, it may just not suit whatever your tastes may be. Thinking of my favorites off my head and I can think of plenty from this past decade or even last 5 years that I enjoyed and my #1 is from the 90s (Cowboy Bebop). Theres also a lot more of it broadcasted compared to the past so that could explain it too, there’s still gems but you just have to sift through a lot more bullshit now
I actually loved Megalobox S2 and thought it was better than the 1st, which I watched not too long before so it was fresh in my mind. I liked seeing Joe overcoming his addiction and piecing his life back together trying to make amends with the people in his life. Mac, a boxer who shows up in the 2nd half, had a great storyline around him as well.
Cant say anything about Tokyo Revengers (I know it’s really popular though) but looking at stuff that started airing in 2021 besides megalobox I liked Odd Taxi, 86, Wonder egg priority (rushed ending tho), Shadows House (which I haven’t really watched actually, but I’ve read a good chunk of it and it was good). Moriarty the Patriot is the only thing I’m currently watching and I really like it so far. To your eternity and Vivy Fluorite eyes song are also generally well regarded but they didn’t click with me as much personally compared to the others. Jobless Reincarnation is as well but I didn’t care for it at all. Different strokes
Not watching anything currently airing though, reading a lot more manga instead. But with new seasons of Vinland Saga, Jojo, Demon Slayer, AOT like you said all confirmed and more on the horizon there’s enough to keep me interested