can the Williams ghost ring 70919 be adjusted horizontally
Yes, look at the top and you'll see a screw. Loosen it and you can move the sight to the left or right.
But if your front sight is bent or damaged then buy a new one, they're only $20.
I will also chime in with my recommendation of the Eabco peeprib (
https://www.eabco.net/PeepRib-Peep-Sights-for-CVA-Optima-Kodiak-Wolf-and-Accura_p_13910.html). It is a rail and rear sight built in one, so you can put a scope in it if you ever want to and also your rear peep sight further back (right past the end of the breech) so it is more accurate (more space between rear and front sights). You can take off the peep sight that comes with it and put the ghost ring onto it, that's what I did.