Hello lopemopay, welcome!
I have limited myself (is this even a realistic goal for a stamp collector?) to certain issues and cancels.
But I find I am buying a page of stamps to get the one I want so end up with a lot of different stamps. I think I am collecting a stamp from every country sometimes.

I do have to sell / give more away to maintain my collecting goals but I think my brain had it's own collecting goals before I thought to have any and it is always winning.
There are a couple of folks on here who are doing similar collections to yours.