He always wanted to be a hero. He wanted to help those that went ignored by everyone else. The unpopular kids, the rejects... The villains.

Despite all that's happened to him, this remained a core part of his character under all the angst and grief. Tomura wanted to help the people that needed it the most, and he only knew how to do that through destruction.

He wanted to be a hero for the villains, the people that he thought needed a hero the most, and sought to destroy everything bad for the League of Villains. Tomura wanted to help those that got forgotten by society just like him.

But AFO only taught him to destroy, so Tomura believed destroying all the bad stuff was the answer. Except that wasn't the real solution (unfortunately), and it led to his abrupt end. Just like how ignoring societal issues won't help, sometimes destroying everything won't help either. But that's what Deku did in the end anyways, huh.

Tomura's abrupt departure is tragic. He could've done a lot more, but he's a villain and villains will never have a place in a society run by heroes. He saw the flaws, but in the end required other people to solve them instead.

Tomura Shigaraki really did try his best until the bitter, sad end of this entire series.

One of the things I think people really underestimate about comics is how an artist can make even the stupidest things look cool by tweaking character designs in ways that might not be immediately obvious. For example, during the summer Olympics a long jumper made the Gear 2 pose after winning gold and it looked super goofy