There is only one thing you can do. Heal a younger DPS so well they can tank. I mean make his toes curl with your healing.
You win the internet today!
Everyone with a sense of humor typically wins right alongside me.
Don’t worry, it’s a great opportunity to meet new tanks and have some casual fun with them. I’ve been a solo healer for a long time now, and I also have 3 dps relying on me, and we’re doing just fine.
I actually like helping to make a ret stay up after the tank bites it. They got 6-8 seconds of tanking and another 8 seconds of sending mobs wildly across the room while they continue to explode.
It’s fun and I get to point and laugh at the tank. Tank can be bottom dps, mid in heals, and watching netflix on their second monitor and nobody cares as long as they are alive with mobs targeting them.
Focus on improving yourself. Maybe consider shedding those low heal parse numbers and work on YOU.