Most approaches to losing weight require too much willpower. I have not got a lot of willpower. I wrote about my approach back in 2011:

https://successfulsoftware.net/2011/10/30/losing-weight-with...

And how to build a garden gym:

https://successfulsoftware.net/2015/12/17/how-to-build-a-gym...

I have been finding it hard recently with pandemic/xmas/birthday. But I do still manage to get into 31 inch waist jeans in mid-fifties.