Ad Or Ap

I started playing kata, i rlly like the character and I was wondering. I can legit not play ap… Riot has a Tank Meta since 20 patches and on GOD in like 50 games I have 1-2 games against mostly squishys. So I did some research and most people say ad kata is better in general cause ur ult does more dmg and u can like auto shi like that. +ur tankier so it helps a bit with the longer fights. Ofc ur basic abilities do less dmg but u can’t oneshot anyone anyway.

So I can play the basic stuff on kata Kombis resets etc so is it better to switch to ad now? Cause I rlly want to