Bronze is impossible to get out of

so today i thought to start trying to play ranked again, i played a normal game to check lagg and warm up a bit, wasnt to bad at all so i played ranked. Now im of the opinion that the only role that can 1 v 9 if really played well is adc as you can out dps a whole team if played well and fed much. This however, turned out to not be true: https://matchhistory.euw.leagueoflegends.com/en/#match-details/EUW1/3641321781/37095342?tab=overview thats my ranked game this is why bronze is impossible to get out of alistar went afk for last 8 min i 1 v 4 them at minute 36 and xayah killed the whole base whilst killing my entire team whilst i was fighting off the other 4 in toplane they couldnt even 1 v 4 a 2 6 adc that i had absolutely obliterated the entire game. i was 16 2 at 25 minutes and just couldnt help the team we lost all objectives and i solo 2 drakes but still nothing will help me enough to kill all the enemies if their not grouped as 5 and even then its hard because i have to actually 1 V 5 them so one zed or one cc and the game is lost.

LOW ELO IS HELL