Help me???

Hello, Call me Dia, I’m 6’2 284 lbs right now, I’ll upload pics in future, but I’m diabetic t2 and take metaformin and januvia, no insulin, and would like help trying to get under 230 lbs, and not do it the wrong way, I have a new friend who wants to push me and help me and he gave me a list of supplements which are creatine+glutamine, bcaas, pre-workout, sustained protein blend (gnc brand) and wanted to know if I’d be okay taking them, any help works thank you in advance, I work long hours so response time might be slow!

Edit 1: Cleared it to make more sense