soooooooooo what happens if Alabama beats Georgia
Depends.
Washington, Georgia, Michigan, and FSU are all in (probably, FSU is not a guarantee) if they win. If they all win except UGA, then Washington, Michigan, FSU, and Texas are in (imo).
If UGA loses and Washington loses, it will be Michigan, FSU, Oregon and Texas and the SEC will be left out completely (imo). But there's also a chance the committee will bump Bama in over Oregon, or bump UGA in over Texas also, or just any number of things. The committee is going to be loathe to leave the SEC out, but it will also be clear and obvious that it's the right call. So who knows what they'll do.
If UGA loses and FSU loses, it's Washington, Michigan, Texas and Alabama (imo).
There's several other combinations of multiple teams losing that all have their own outcomes of varying degrees of likelihood. There's also 1-loss Ohio State lurking, and who knows what the committee might decide to do with them as a 1-loss option if we don't have 4 undefeateds.
Just too many variables to tell.