If you're skilled with installing software on servers, here is a very comprehensive categorised list of services you can host yourself:
github.com/awesome-selfhosted/…
#SelfHosting #GrowYourOwn #HomeGrown
GitHub - awesome-selfhosted/awesome-selfhosted: A list of Free Software network services and web applications which can be hosted on your own servers
A list of Free Software network services and web applications which can be hosted on your own servers - GitHub - awesome-selfhosted/awesome-selfhosted: A list of Free Software network services and ...GitHub