Turn signals and brake lights are the same bulb in the rear. If one popped the fuse, the other would too so that can help the direction you work.

There is the third brake light also. Wiring is different than rear lights.

Brake light switch in pedal area also.

If no meter to test with, put in new fuse and wiggle all the harnesses for the brake lights.... it this can cause other problems by grounding out the wires and causing burning.....