Fishing not working at all

so after i got my fishing rod i tried to fish and nothing appeared i thought fishing is hard in this game so i left it, then i wanted a dratini, fished a lot still said (nothing happend)
thought it’s really hard to fish ,yesterday i had the super rod and tried on like all the fishing tiles and thought fishing was, a tile every 12 hours will a probability of fish, no it wasn’t like that

so either i’m the most unlucky man alive or a glitch happend (-_-) (i know the glitch about delta remoraid i didn’t even encounter it)