Need advice

My boyfriend 'M30' and I 'F 23' have been in a relationship for the last '6 Years and now things are getting very bad. In the start he used to flirt with so many girls online on fb, he was in touch with his exes and twive he posted pictures with one of his ex with a paragraph admiring her beauty and his time with her (the time he met her in person not the one when they were dating) even though i asked him not to meet her he met her anyways and posted pictures as well, and on one occasion he sent some money and other stuff for her (when she got covid and was in isolation) from another city, anyways i fought and fought thousand times for him to stop all this but he didn't (also we were in a long distance at that time, he stopped doing all the flirting all at once (i got skeptical because how can he stop all that at once) then he started to get business in his business (which he started 3 years ago) and then he spent all his time in that i got barely any attention and then he moved to another city to level up his life and since then he has been acting very different like someone who is very of high standards and i am just a lower class person sticking around them. anyways i still didn't change myself and loved him like i used to, but now that he has his own business he is always busy and there are days where we only mesg eo good night and good morning, but his friends all 'M' and '30 plus' some are married with kids as well are always 24/7 at his house, they go out on drives there is a mandatory picnic at the end of the week , even on weekeneds he rarely talks to me, all of this is very frustrating, whenever i complain about him not giving me time, he shout at me, tells me to f*k off and shutup and accuse me of not supporting him in his business (by that i mean he wants me to sit in silence about him not giving me time), when i think about leaving i can't because of attachment, but i sometimes fund myself fighting if i am doing too much? I always have this strong feeling that this is not it but sometimes i feel like he is the one, i want to focus on my career and have a better bright life, but this thing has ended all my energy and the fact that i got into a relationship with him while i was at my lowest. I am stuck emotionally.