The best alternatives to Change My Mind are Micgoat, Kialo, and Belief Challenge. If these 3 options don't work for you, we've listed a few more alternatives below.
A video app to debate bitcoin, net neutrality, politics and more! Micgoat is a video app where you can engage in a one-on-one discussion with a fellow citizen. Come reinvent the way people discuss controversial topics.
Belief Challenge is a social media platform that will change the way people debate ideas. Users post a belief AND write three conditions that, if they were true, may change their mind about the belief. Users must question themselves before attacking others.