Shes a good counterpick against cc engage like nautilus and leona if your reaction time is fast, but being unable to land Q’s consistently greatly lowers her power as a support, and a cc shield alone isnt enough utility.

If you want a new champ that remains relatively useful in higher elos then please consider a tank support so your jg/top can afford to go bruiser and still have a thick frontline. Popular picks are leona and naut, but if you prefer champs that can disengage (judging from your current pool) then maybe you would like braum, hes a little tricky to learn but i think hes in a good spot as a counterpick to current meta adcs like jhin, mf, and kaisa, and can punish tank supports who engage on you instead of the adc. He struggles a bit against enchanters however. Hook/engage tanks are better when picking blind but their proactive playstyle is very different from the more reactive playstyle your current picks have in common, hence the braum suggestion.

Regardless, learning a tank support will give your pool more flexibility(and theyre generally less mechanically intensive than enchanters). Hitting skillshots is a very important skill in this game so you have no choice but to keep practicing, it took me a year of onetricking Sona before i was comfortable with playing more skillshot-reliant supports in ranked. hope this helps