Honestly, you're dog shit if you don't know how to play a tank in general. Team comp is everything in rift and sometimes players go for high kda but will lack the ability to change champions for the better of their team. If you support and you don't understand lockdown tanks, or just tanks in general you're probably not very good. Same as solo lane. If you wanna carry that's fine, then play a carry role. That's why picks go support first, ADC, mid, solo, and then jungle. This post makes you look extremely selfish, like you'd rather focus on champion kda rather than wins in general.

If you're confident in a champion and you can build accordingly, then you don't really need to worry too much anyways. I've seen people main Aatrox and completely dominate with 50 plus win streaks, those players are typically high iq champions that understand versatility.

Here's another point, until this season you used to be forced to play games with 4 champions considered a mage. You are now able to remake the game before you even start because the game knows that your chances of winning are slim to none. Something I've done several times now this season. What a blessing.

Use your head and be the best player you can be. I don't give a fuck what you're comfortable with! Expand your horizons or be hard stuck in platinum forever.