Firmer brakes overnight
For an easier way to get better brakes, use a cable-tie or similar to hold the front brake on quite tightly and leave overnight.
When returning to the bike next day tap the brake hoses thoroughly to get all the bubbles, that have formed due to the continual pressure, to rise to the top into the reservoir. Hey presto - firmer brakes.
It’s not the best way to do it but it’s the least messy and certainly works