lol i've been in a loop over the past 6 months of constantly gaining and losing subs, thus not getting anywhere and being stuck at the same number even after gaining subs
main point: Just don't take it personally. Some people prefer to keep their reading list small, and if they really don't want to read your comic anymore, you can't force them to continue or anything. Just keep doing what you're doing. It's a waste of your time and energy to get hung up on those sorts of things. Plus, and this isn't to get anyone down or anything, but as your numbers get larger, so too do the number of dead accounts that are subbed to you (people who have 3k subs are only getting maybe 1/2 to 1/3 of the average views that their sub count would suggest, that's just how it works everywhere when it comes to subscriber-based platforms).