Had enough of his shit

So I’m 19 and my boyfriend well was boyfriend is 26. For the past 7 months we were together he would this..

I thought I could believe him. And he promise me that he wouldn’t go on snap and Instagram anymore and I went on our tablet and his pictures on his phone are synced to the tablet and there was screenshots of pictures he screenshoted of memes ( which idc) and he went to show me something on his phone and accidentally clicked all apps tab and Snapchat was on there. He claims that his phone ( Samsung galaxy s6) won’t uninstall apps.. He me PROMISED me that he wouldn’t go on snap and insta anymore. And we ended up breaking up today. Was I wrong for feeling this way? Or ? I love him and I’m sad but I just can’t do this anymore I’m 19 years old and hes26 and we live with his mom. I have my whole life ahead of me and I feel like at his age he shouldn’t be playing these games