I know, something very different, but i bought this rather cheap thing for my M50:
https://www.aliexpress.com/item/1PCS-PU-Leather-Camera-Protect-Half-Case-Cover-Grip-holder-for-Canon-Eos-M50-EOSM50/32888240448.html
It realy improves the grip on the camera. And now my right palm doesn't...