Advice on Boo

Boo, my frenchie HATES other rabbits, i have tried to bond him with mine and he just wants to attack them all, and have tried him with other single female bunnies but he is having none of it. He is an outdoor bun, and having charlie & olly inside means i have no room for him on his own.
is it fair to keep him on his own outside?

Did you try to bond away from other buns, on neutral territory & were all buns involved neutered?

Have you tried a rescue bonding for you? I find it harder bonding your own than someone elses?

agreed was the area completly neutralised with white vinegar adn nothing that smelt of any of them in there, did yo utry mashed banana on thier head, a carrier in the car trick etc? if not ask a local rescue to try for you too. x

Was completely neutral, none of the buns had been there before & are neutered
boo just locked on every bun I tried him with within seconds of seeing them, really nasty