Big one is just walk more. If there’s anything near your house that you regularly drive to, start trying to walk there as much as possible.

I have a lot of trouble motivating for the gym and similar self-directed activities, so I find classes or semi-organized sports much easier to do consistently.

Actual paid services? Basically only Steam.

FOSS is the only software you can count on to not start nickel and diming you once the subscriber count starts to level out.