Awesome man. Walking is the best possible thing for health if you can do it. Biking is great too. If unable to do those things, anything physical you can do for 20 minutes or so per day that makes you breathe hard is excellent.
I think it's the weight lifting that makes all the difference. Today as I picked up some BBC heads I could just stand there and the head did not feel all that heavy like last year when I stopped using the weights at the gym due to covid.