I have chronic plantar fasciitis in both feet.
If you are overweight, try and lose it.
Ask for a physio referral, they can assess your gait and recommend exercises and supports.
Mine is exacerbated by weight but caused by tight calf muscles and overpronation (collapsing arches), so a combination of appropriate footwear, exercises, inserts and night splints were recommended. Still have it 6 years later, just started couch to 5k so it’s killing me! Resigned to it being lifelong.