my comp crashed in champ select but it didnt dodge me

like the titles says, my computer crashed and i was first pick so i already picked, but it didnt end the champ select so it took me into game to lose 20 lp

whY?

whats the difference between me turning my computer off to not want to play and or to dodge then what happened

its pretty bs i lost 20 lp wwhen i should have only lossed 3