No, you’re not in the wrong. On most fronts you’ve done the most reasonable thing.
Both time and money wise you’ve done the right thing and best thing for you. He should get that tbh. he isn’t picking you up all the time, and he isn’t paying for your membership so he can’t really complain. With uni and whatever else you’ll have on with living in accommodation , having a gym 1 mins away will always be the better option!!!
You could’ve maybe spoke to him, let him know you were going to cancel in case he offered to pick you up every time or pay for your membership, that wouldve at least made him feel included in the decision but at the same time, it probably wouldn’t have changed the outcome. Highly doubt I. Practice he would be happy to pick you up and drop you off basically everyday of the week.
Not ideal you’re having issues already, but that’s relationships for you. If it’s not meant to be, then so be it. Plus, broken up 5 times in a month wth?! Depending on how serious those were and the reasons for them, it might be a sign that a decision needs to be made.
I don’t know about the other reply about “always involving” your partner is making a decision. You can and did make this decision yourself.