I would strongly recommend trying Couch to 5k. There are a bunch of free apps for it. It’s a program that can get basically anyone from doing zero exercise, to being able to run 5km. I literally never ran until my 30s and now I do 5km 3 times a week, and even did a 10km race.

It’s very gentle and achievable but all of a sudden you’ll realise you’ve finished the program and you’re a runner haha.