It is close to impossible to suggest drills to an individual you've never met much less to know there speed. Asking a forum will yield a bunch of personal opinions once again based off of that persons skill level. If you searched youtube and couldn't find enough then i'm not sure what that means.
Drills are a very personalized thing and i spent A LOT of time making my folder, I would suggest you do the same based on your problem areas and modifying stuff you see, youtube is loaded with stuff my friend. So just take some time taking note of a couple of games against the ghost and see what you have problems with and make a drill around that, if you truly know yourself you should have an idea out the gate.
as a guide type "POOL DRILLS" in youtube and go from there Joe Tucker has some simple things a person should work on so does Dr Dave, FXbilliards, Fargo there a hundreds. Youtube/pool drills/binge watch. For best result shoot shots tailored for your skill level, we don't know your skill level (at least not me, and for the love of a Deity don't take this out of context)