budget android phone won't open browser pages

Title sums it up. My dad got me a budget Android phone on standUp wireless but since my data has run out I can't access it on mobile data. That's to be expected (I can still call and text) but after a few days I stopped being able to access browsers even on wifi. I tried factory resetting my phone and it's STILL doing it which warns me that it has something to do with the SIM card somehow?? I think it might be rerouting connections or something. Whenever I open a browser and search something up it will load to around 60% and then freeze on a white page. I have NO idea what to do here; I'm suited for computers and consoles, not Android phones. I really should learn how to fix this at some point.

Any advice, Reddit?