Weight-loss, exercise & injury?

Anyone else out there dealing with injury on their Weight-loss & fitness journeys? Had surgery on my ankle & knee 4 years ago. Has improved over the years but rarely without pain but want to do a better job of preventing & managing reoccurrences. Currently nursing a painful knee (twinged it a few weeks ago sitting down....!). I'm climbing the walls bc I want to cycle! Trying to refocus on what I can do. Anyone else facing similar? Want a support /motivation buddy?