Is college for me?

I am on academic probation right now and I am stressed. My class i am in is literally deciding my fate for the rest of my life. ( at least until i can go back to school after flunking out) I have been to 3 different universities for multiple reasons. (money, military life, etc) I changed my major once and I was so terrible at self teaching in my online classes that i went running back to my original major. I have always tried to study hard and stay in touch with teachers. I never make excuses if things didn’t turn out okay. But sitting here with a proposal about to decide the fate of me having a college career I am questioning if I am just not meant for school. Was there something more I could have done?

(I have been doing online classes since 2016)

Tough to give much advice based on your post-but it appears that online classes aren’t for you. Before giving up on college completely you might want to try a class or two in person-which right now is unfortunately impossible.
But keep in mind everyone learns differently, and it may be that you would thrive in a traditional classroom.
So for right now college might not be for you-but only for right now. If you’re still interested and conditions allow, sign up for a course or two in person and see how it goes.