I have a buddy who would hook a fish, and then set it again, and again............he ALWAYS lost fish.
Your hookset may be too much. Yea, Yea, I know a whole lot of people who will call ********, but if fish are short striking and you power that hookest, you can rip through soft flesh and make too big a hole.........a few shakes of the head, and that fish is done.
WE have all caught fish with just a bit of the hook in fishes, top lip. That fish will still end up in the boat if your hookset is just right, versus too little or too much.
We've also had those bites where you were THUMPED and you bring back the bait, and hour hook didn't penetrate your plastic that is being fished......
With regards to Mono..........said buddy above, was also a born and bred FL fisherman and used mono back in the day. He switched to braids about 20 years, ago, and it has taken a while for him to adjust his gorilla hookset. He's getting better , but sometimes I catch him over setting.....
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I hope you figure it out, because wondering *****.