u/I_have_a_lot_of_catz

My bobbin thread keeps coming through. I can see it on top and sometimes it’ll also thread loose randomly on the bottom for a stitch. I have adjusted the top tension a million times, I’ve tried a new needle, I rethreaded the machine, rethreaded the bobbin…what am I missing? It was perfectly fine and in the last week it’s wonky. I’ve had this machine for maybe 3 weeks. Singer Heavy Duty.