Go on YouTube, since lockdown everyone and their dog has a video for bodyweight and/or band and/or dumbbell workouts for training at home.

I followed this one from Athlean-X during the first lockdown last year before I had all my own home equipment:

https://www.youtube.com/watch?v=vc1E5CfRfos&list=PLG57XRhAL-2XFZuKLtTrZRFy2ocY5xmFd&index=1

I was more ripped after lockdown than before! Enjoy or find another. Like I said there are a bazillion on YouTube now.