You pedaled into a LH corner and hit the pedal into the pavement, didn't you?
they do weigh more than the right one, so tend to hang low when pushing the bike.
Got a pedal wrench? you can install any 9/16" left pedal or pair, you wish.
'Spud' or whatever.
old Brompton pedal takes a 24mm socket to unscrew,
new and Ti one, an allen wrench.
Any pedals fold up nearly so neatly?
not as low & flat a profile when folded .
There are removable ones ,with a QR, the EZy
but then you have to make sure you don't lose them.
maybe just get another left pedal like the right one ..
accept that it wont fold , or bring a wrench to remove it .
6mm allen hex fitting in the end of many pedals now.
That Includes the current Right hand pedal,
and as there is a matching left hand pedal, sold currently ,
10 bucks and a 6mm allen wrench in your bag and you are good to go.