Not sure if it’s my imagination, but I recently attempted a brake fluid flush and everything seemed to go just fine. Reservoir never went empty and I didn’t think I let any air in.

But now I suspect brakes aren’t working the same as before. Could be my imagination, but they just don’t feel as immediate/responsive. Fluid isn’t leaking on garage floor either, and reservoir is at the top indicator.

Where could I have gone wrong, and how can I attempt to fix? 21 Tacoma if that’s any help, thanks.