I'm on the left, and can concur. Many of us were pissed about Bernie losing, and thinking yeah now's the time for the Green party to win...
Then there's like at least 3 groups trying to start 3 new political parties, those of us pushing for the greens, more pushing for one of the socialist parties, and some even pushing for the libertarian party (I'm a leftist/socialist libertarian, but the libertarian party is NOTHING like a left/libertarian), and some voting for Trump out of spite, or insanity, and the rest probably cow-towing to vote for Biden.
Just ideas alone it's pretty disjointed. No organization. I mean the right/tea party at least was pretty coherent and had a pretty good structure to accomplish their goals.
Leftists though have their own purity tests, and their own minds made up and can be rather stubborn about how to accomplish goals, what those goals should be, etc...
I think we all have ADHD or something.
However, there's no 'terrorism' on the left, or very rare. antifa is not a terrorist org. Show me the deaths, the bombs, etc. I can show you plenty of those on the right though, an antifa terrorist is probably some kid egging or graffit-ing a building. That's about as serious as they get, because most on the left are also pacifists.