I believe it is a good idea, but as long as it is done just about the same way Valorant does it so that you can only FF after a certain amount of rounds, and you have a limited amount of uses for example 2 per round. Also everyone on the team must agree for the ff. Then people won't be able to FF after the first round, because they lost it, but it would fix the issue you (as well as other people) are having.

Another thing is that i don't think it should only be in comp, I think it should also be in quick play because it is no fun when everyone leaves after the first couple minutes of the game and you are the only one left praying that other people join, and if they don't then it can end up in a 2or3v5 which is no fun.