If it makes you feel any better, many of us are in the same boat. I have no doubt that if we truly understand the Slichus we will have an easier time saying it. May I suggest that you pick one or two pizmonim from each day of Slichos (perhaps more for erev Rosh Hashanah) and learn it through and through in-depth, including looking up referenced pesukim etc. until you own the piece! You will be looking forward to Slichos!
Tried, tested, and proven…
Same with daily davening.