I had a start programming and doing little weird animations back in the early 2000s. Then I could earn a living doing stuff with Actionscript, little games on the web, or profile picture generators; even stuff on the BlackBerry PlayBook, which had support for AIR runtime. I made games with Flash and Actionscript until ~2015. Newgrounds even holds a jam called Flash Forward, in which you submit Flash games https://www.newgrounds.com/collection/flash-forward

I stopped using Flash long before it became Animate. I'm really sad to see it go, and that Adobe has so little love to this important piece of the web and the Internet.