Is his campaign promising things he doesn’t have the power to do?

A president can do almost NOTHING unilaterally. What they’re promising you is what they’ll support if it makes it to their desk. This is how checks and balances work… if you want to vote for someone who has sworn to be as shitty as possible because the guy who swore to do things you want can’t just snap his fingers and make it happen, I guess nobody can stop you…

What you’re finding is that the Democratic party is still interested in a functioning government where people don’t just vote the party line like a borg - which results in more difficulty passing legislation. Unfortunately, “both sides same” isn’t remotely accurate which you’re finding out.