I'd recommend a good solid walker. I've been using this one:
OasisSpace Heavy Duty Folding Walker, Bariatric Walker with 5 Inches Wheels for Seniors Wide Walker Supports up to 500 lbs [Walker Accessories Included] (Heavy Duty Size) https://www.amazon.com/dp/B07H2VM631/ref=cm_sw_r_apan_i_PWXKGKJ6AS88Z9APX3WQ?_encoding=UTF8&psc=1