Hi, welcome to the forum. Glad you joined.
Most places don't even try to sex bantams so you can get boys as easily as girls. Your odds of getting three boys out of three chicks is 1 in 8, not all that unusual. Still not pleasant. They all look like boys to me.
What are your goals for having chickens? Why might you want a boy? The only reason you need a rooster is if you want fertile eggs. Everything else is personal preference. Nothing wrong with personal preference, I have a few of those myself. But that is a choice, not a need. I typically recommend you keep as few boys as you can and still meet your goals. That's not because you are guaranteed problems with more boys but that problems are more likely. For many people the right answer is one or none.
So, what are your options? You can continue as you are. Base your actions on what you see. Sometimes that actually works out. But I would immediately find a place I could isolate one, two, or all three on a moments notice. There is a pretty good chance you will need it.
You can get rid of one, two, or all three. Get rid of can mean sell, give away, eat, or permanently separate them from the girls.
If you decide you really want to keep some or all, build a bachelor pad. If you house them without any girls they tend to not fight that much or that viciously. They will still set up a pecking order but it is often not that much worse than an all-girl flock setting up their pecking order.
Good luck with it. It's usually not an easy decision to make.
