Mechila

From a person with inside perspective…

If one turns away from someone who is “off the derech”, and continuously makes them feel like garbage, then do not come to them Rosh Hashanah, Yom Kippur, or nebech, when there is illness, death or tragedy, and beg forgiveness.

There will be no mechilah.

So, consider this before asking for mechilah, that perhaps the better course of action is to not commmit the action in the first place, and then mechilah will not have to be asked. Just my two cents.