It's a common feeling after a bad ruling. Before you blame the judge, do these three things.
The hard questions first: were your facts and evidence organized and filed before the hearing, or did you walk in with a story and no paper? Did you let the judge finish a sentence, or did you interrupt and talk over the court? Judges decide on preparation and demeanor as much as facts. A lot of "the judge hated me" is really "I came in disorganized and reactive." Fixing that is free — and it changes your next hearing.
The first instinct is to disqualify the judge. The rules and deadlines on that are narrow and it rarely lands, so don't pin your hopes there. What you can do is bring a motion for reconsideration when you have new facts, new evidence, or a change in law. And the part nobody tells you: judicial assignments rotate. You may be in front of this judge for a while, but at some point you're likely to draw a new one. The case is longer than one bad day in one courtroom.
Custody, support, and visitation aren't permanent. The moment a real change in circumstances shows up, that's your opening to request a modification. A loss today often just means the change hasn't happened yet — or you couldn't prove it yet. So stop reacting to the last hearing and start building the record for the next request, cleanly and on paper.
This guide is general information — a consultation is where it becomes advice.