Self Host it whenever possible
I have a passion for teaching online. First learning something that might be quite complicated, then being able to replicate the steps and find a way to come up with an easy to follow tutorial. Sharing knowledge is something I find very exciting. It's all about getting to that aha-moment. It's this small moment where all the various pieces come together and you get this exciting moment of having a puzzle completed.
Over time I've found out that there's a lot of SaaS (Software as a Service, aka online tools with subscriptions), that can be replaced with an open source alternative. Providing lots of benefits. Self Hosting open source software has been quite complicated and something only for developers. But since I've discovered Coolify, there's the potential to self host software for a larger audience.