How can I install the Linux-Libre kernel?

I dont know if this is the correct place to ask this question, but is it possible to install the Linux-Libre kernel in my Manjaro machine? Could I go back to my default kernel if things don't work out? If so, how?

I would say that I gnu/linux for the ethical reasons so the less propietary stuff the better right? I only use my machine for gaming. I have an AMD card, wired peripherials and an ethernet connection so I think drivers won't be too much of an issue. I'd call myself a Linux noob, so if you could point or give me a step by step guide I would appreciate it very much.

As far as I got by myself was the download section, but I dont really know what to download and what to do after that.

Thank you very much uwu