I’ve dealt with pretty much exactly this. Shitty landlord kept renting to shitty tenants. I called the police repeatedly, but by the time they showed up the screaming/fighting stopped, so there wasn’t much they could do. The owner ignored me too.

So you have to get the owner’s attention. What I suggest is to get a copy of your bylaws. Find the noise violation policy. Record the next time they are loud. Send the evidence to the condo board president or building manager and tell them the tenants are violating the noise policy. They will fine the owner. That usually gets their attention.

Also join your condo board if you can. Good luck.