Advice

So I’m debating what to do. I have a 55 gallon with common goldfish. I’ve recently had to take two of my females out because the boys were just beating up on the girls not just breeding like aggressively they were gonna kill them. So i j got my 4 boys in the 55gal now. So currently I have the two girls in a 10 gallon, which is awful small. so I wanna get some advice what I should do I really don’t want to but I can either go out and spend 100+ to get like a 29 gallon which isnt the perfect size but I can’t get another 55 gallon. Or I’m thinking about trying to find someone with a pond that will take them. My only question is if I take them and put them in a pond will they be like OK? Because I mean they live in a tank their whole life and stuff would they do good in a pond. they’re 4 years old. And i care alot abt them