Try this to see if it is your stroke or if you're not seeing the shot correctly.
Place two(2) 'object' balls on each side of a head end corner pocket to tighten the pocket just a LITTLE on each side. Now go to a position behind the spot on the foot end & place the cue ball about 'your' follow thru distance behind the table spot directly in line with the corner pocket opening. Now shoot the cue ball into the pocket without hitting the other balls on each side of the pocket, hold your follow thru & look to see if the cue tip is directly over the spot. If you want you can use your sticky donut holes placed closely together & roll the cue ball between them & see if the cue tip is in the middel of them. If your stroke is good or when you get it good & you're still not pocketing balls. It probably is an aiming thing & there are several if not many different aiming ideas to try. I personally started out with the ghost ball system but then quickly started using english & physics along with it. Good luck with it.
PS The good thing about that red cloth is that wine stains won't show up as bad as on a 'traditional green' cloth. I would suggest that you use Masters 'tan' chaulk. It won't dis-color your cue stick red over time.