Ah, I see! Thank you :D

Corey: Monster Hunter Rise Sunbreak - If you look in the investigations before you take them, it will sometimes have a number in red on the investigation (Quest info) either time, monsters, deaths, etc... those quests were created from an app that allowed people to create investigations to maximize what they wanted the quest to do. and when you do a quest with someone else that is DOING an investigation from that, it sometimes gives the assisting players the investigation. allowing players to get hacked quests, without them even knowing. most people say "I got them naturally". which can be true because of what i already said about getting the investigations from other players. Those investigations, When YOU start the quest (not when you join), have the potential of corrupting your save data with NO CHANCE of recovery. Capcom even posted about it in their updates on steam for monster hunter rise: sunbreak. that's what it means.

I dont know what you meant by red quests :-;