Honestly, I haven't consistently stuck with something. I've tried calisthenics programs through Nike training club, Jeff Cavaliere's home workouts, and tried some of Stew Smiths stuff. I suppose the only thing I've maintained throughout is just doing pushups to failure before bed each night.Are you following a push up program or routine?
For running, I would check out Nike Running Club. Their programs are great for building up endurance+speed from scratch. Their guided runs probably aren't for everyone (I personally don't mind them) but if you don't find it grating/cringey, they really help with maintaining mental focus during a run.