>>1548877use Italian method of seat height
with your leg strait and your ball of your foot on the pedal
your heel should be below your forefoot and the axis of the pedals rotation
use Ankling pedaling technique to compensate for lower seat
having the seat slightly low (1cm lower than crotch appendages) also means more of your weight is being taken up by your legs, the seat becomes less important
or you can use the middle of your foot to pedal
this allows you to sit slightly lower on the bike
it can give your Gastrocnemius and Rectus Femoris a rest
but puts strain on other muscles and the middle of your foot
only good for low speed
thinner flat pedals (HT PA03A Nano P) (OneUp Composite) idk I dont really keep track anymore) or ultra thin pedals (Shimano Dyna Drive) can put your body lower on the bike
or you could get a bike with a lower bottom bracket, eg old road bike or hybrid bike, maybe pick up an 180 mm crank arm set if you ever see one
the last thing is to practice your method/git good
with a really low seat its possible to swing one leg over the rear wheel and the seat, seems like bullshit at first but Its a tip picked up from someone who had both hips replaced
another way is to hold the bike with one hand and tilt it over at a 30 or 40 degree angle to make the top tube easier to step over
then with your right foot on the non drive side pedal rock the bike upright, while kicking forward with the other foot
third mlg method is to stand up with your right foot on the non drive side pedal
kick forward with your left foot to get moving
then scoot and twist over the top till your legs are in place