Bad Relationship???

I’ve never really posted on here much but I need some major advice.

My SO and I got together April 2016 and August 2017 I broke up with him for multiple reasons. February 2018 we ended up getting back together but lived in different states till March 2018. Now I’m not sure if I made a bad decision of getting back with him.

So when we first got back together I found out he was still talking to this other female, (he had told me about her when we were getting back together and said they were online bf/gf but supposedly broke up before he and I were together again), but I found that he was still getting nudes from her up until he was physically with me in March. Later He and I started buying clothing to put on our online store and he made sure that same girl bought something and she sent pictures in it and he posted it on our Instagram page for our clothing store. I found out he followed her on her private account on one of his Instagram pages and he told me he “didn’t know” even tho he only followed 19 people on this page. Also since we been together in Nebraska he has no friends but talks to girls that are supposed to be friends online, no guys at all and currently he talks to some girl he met on Insta he says mostly about acting and auditioning and stuff (I’ve never checked). He’s supposed to be working on doing music and acting and modeling. Right now he Runs Instagram pages and a online clothes store and barley makes $400 a month some months just $100.

I’ve even been working to make ends meet for my family of 4 and he insists on staying self employed at home with our online store, that isn’t doing good yet and for him to run his Instagram pages while I do uber eats by myself.

January 2019 I fell when I was pregnant and messed up my leg so I’ve been having a hard time working for months but I’ve powered through it, I even started working a week after I gave birth to our son but he still won’t get a job because I’m not “supportive” of him and I staying self employed, (I work a Courier Job so it’s Considered Self Employed) but we’re barley making it. I’ve also been sick since September with different things it’s like when I’m almost better from one thing I get something else and I still have to work to keep an income in our house while he’s only made $98 as of today in this month. I feel like I might as well be single and do things the way I feel would work better. Idk if I sound ungrateful or not supporting. I just feel if we work and invest we can become fully self employed but he thinks I’m completely wrong.