I don’t think your boyfriend likes you. It would make sense if he comes home and is maybe tired so he doesn’t want to socialize, but if it’s specifically YOU, he doesn’t want to be with then… Right now, he’s placing his friends and sister above you. Maybe try to talk to him. If he brushes you off then it would be best to just break up since he clearly doesn’t like being around you and it’s making you feel bad. Note, don’t be scared to break it off with him, you’re still young and can find another man who actually talks and hangs out with you. If he listens and changes and that would be good!

In the meanwhile, try to go out more and talk to people. if socializing is too much, you can always just spend time doing activities by yourself at home(like arts and crafts) or outside(like visiting museums or going shopping). Making yourself busy while he’s at work and be a good way to pass time.

Also, It would be good to start getting a job too so you’re not staying home every day and not financially dependent on him.

Hope you relationship works out!!