Because MAGA is a Republican group, and, as you now know, Republicans were responsible for getting rid of slavery. Also Trump has kept all of his promises during his second term (except for ending the Ukraine war on Day 1, that was just an empty promise), and he sealed the border on Day 1, something your party wasn't able to do in four years. So when Trump says he'll do something, I trust him to get it done.
Again, I ask: why you associate yourself with a party that has such a long history of limiting people's freedoms?