hardstuck diamond 1 jg lillia onetrick

I feel like you can onetrick any champ to diamond. But it might be exponentially harder to bruteforce masters above, onetricking a champ in jg.

Against bruiser, tanks it's free, i go 15/0. But if I'm playing Lillia against a Vayne, Elise, Pantheon, Darius, Fizz, Zed, Naafiri they explode me with unavoidable cc, range or dmg and im useless.

I lost 3 games in a row, first they had a vayne chall smurf apparently, second i was autofill top, then hard matchup and top went super negative. So, I descended to dia 2 and thought about quitting and uninstalled, but I wonder if it's just a skill issue or what should I do or play to go masters above.

I want to atleast get masters, so any advice from players better than me in jg? I've thought about playing 1 or 2 more champions in jg, like hardcarry bruisers or so.

my opgg is moii44#LAN