Wide naturalshape training &Marathon shoes? (Heavy fat)

Want to start running again and get a 5k but haven’t ran since weight gain

i have mild bunions and flat/low arch, so now i wear roomy wide toebox shoes like whitin for dailydriver wear to hopefully stop problem and reverse it.

Since I haven’t run in quite a while i need advice on treadmill & park run training shoe + Want something like adios pro or alphafly i read on the news for raceday one day

Be best if shoes actually ideal fit for me and won’t worsen my bunions, heard zero/min drop height is good too??

Any tips and advice would be great, especially heavy folks , bunion lowarch etc