What should I do?

[Mobian]

So, a while back my hard drive broke with my save file, and a friend of mine had a save file of it, thank God, but it's not very recent, in fact it's prior to the Fire-type gym leader which was hell to beat to begin with, and not only that but after I defeated her, I went to go collect all the stickers and do any other quest I haven't done yet, stock up on potions and whatever for the next area, the thing is considering how hard it was to face her and actually let the RNG be on my side when it came to that I really don't want to fight her again, and the stickers, I checked my only save file I have at the moment and it says.. -1? I.. don't know what went wrong there.

I'm not trying to be lazy, the gym leaders just take forever to beat at times, I had the same issues with the Psychic and Poison but like I said the RNG was on my side that one time, barely.

Should I just shush up and try to re-do everything or does anyone have a better alternative?

(Also here's a photo of it saying I have -1 stickers. I had all of the stamps you could get currently until I lost my original save... ._.)

[Nova]

It could just be a display error. Maybe the store areas are normally accessible once you reach Reborn again. At some point in time, the sticker events got reset, so maybe you need to talk to all the sticker givers again to instantly get the sticker.

[Mobian]

Alright, thank youu...

[Amethyst]

Yeah, stickers were reset to fix some issues after one point, and because of reasons they start at -1 if you're coming from an older version. Don't worry, after you get your first sticker back, it'll properly be at +1.