My friends healing depression came back due to my creepy stepfather...

Back here for the third time... so what happened was my friend was venting to me about being depressed in a DC call, he hasn't told his parents, he's recovering and not feeling self harmful. I Googled a way to cheer a depressed person up. Lo and behold the next morning, my father comes into my room and just tells me he saw my searches through AT&T and added a time off to my phone (because I was on it at 11:00, and my friend needed company at that time), plus he contacted his parents and now his parents are signing him up for unnecessary therapy. Stepfather restricted our contact since it was "for the better". I'm feeling really pissed off, because I trusted my stepfather, and he threw that trust away. He also has a history of being manipulative to me (16) and my mother. I have an android and only need a way to throw off the AT&T monitoring and downtime. I have a Samsung Galaxy S25 and do not have any other parental controls other than the ones installed by AT&T. I've had suggestions about safemode, which I haven't tried yet (what happened happened earlier today). Any help is appreciated