I mean, that’s partly true. From my keeping up with politics, some of the candidates actions are their own but about 80% of the job is what you described. Your party recommends actions to you and congress sets you up for most of your actions. Vetoing things is only common when the opposition holds congress.
I’ll highlight though that lately the presidents have seized more and more power and continue to do so. It started with Bush basically declaring war without congress and lately it’s been Biden doing things like canceling student loans and blocking the border up. Which I get that’s all power they’ve always had, but they’ve been reluctant to use it improperly because it’s so abusable. Now those robes are off and so trump will come into office and immediately write laws by himself basically
That is assuming that our universe is flat in the 4th dimension…