goto url about:configfilter with: network.trr.* and set the following values:network.trr.mode value 3 network.trr.bootstrapAddress and set value as one ip from this page
( currently 220.127.116.11)now open a new tab to this page used to verify if everything is working. You should have all green except sni. To make all green you should switch tab and go back to config pagechange filter with: network.security.* and set:network.security.esni.enabled value truego back to previous tab and refresh. You should have all green.