Do I confront ??

28F here been dating my bf 3+ yrs and he just recently quit his job traveling, making salary to work at McDonald’s…. First red flag, we were fighting a lot, haven’t seen him for two weeks. Yesterday while we were out getting lunch I noticed he changed his phone password which he had never done, started turning his phone face down, I’m not dumb, I already don’t trust him, but can’t leave…. Idk I just need help I have no support system. I wanna ask him why he changed it but worried it will start a fight help SOS !