Can I easily replace systemd on a distro that came with it? I wouldn't consider myself a Linux expert, but I got to a point where I could get around and started

Can I easily replace systemd on a distro that came with it? I wouldn't consider myself a Linux expert, but I got to a point where I could get around and started to understand the different init runlevels and how to set them, then everything was ripped out from under me and I no longer understand how to work everything anymore. Perhaps Linux boots faster now, I don't know, but it was really very frustrating I couldn't find a major user-friendly distro that worked the way I was used to.