Complaint of a instances in ranked for which a 4v5 occurs

Okay this may just be me, But when I play ranked and someone dc's for no given reason I believe that the team that loses that match because of someone Leaving the game that team should either get a LP loss reduction or even not lose any LP.To me it seems unfair even to the other team because it goes from a 5v5 to a 4v5 the sheer numbers alone on the enemy team can wipe out a team of 4.I don't see how we are to see the team of 4 win against a team of 5.Please I don't know how you could possibly add a possible fix to this but please take this into consideration. Sincerely, Pattingman