rate / advice?!!

Pavel Durov said

yes
asymmetrical face usually means an asymmetrical skull, so it generally can’t be fully corrected without surgery. Sleeping on your back isn’t the solution either. during sleep, maintaining proper tongue posture (mewing) while lying on your back is difficult because gravity makes it hard to keep the tongue in the right position..
however asymmetry can be minimized or prevented by chewing evenly on both sides instead of consistently favoring one side.

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Sleeping on ur back/switching sides can help prevent further assymetry as constantly favoring one side in side sleeping for a very long time can help in assymetry and as u said assymetry can only be fully corrected with surgery but certain facial exercises can help with assymetry subtly if the cause is muscle imbalance/posture related it won't work if that's ur actual skull , I recommended it just incase those were the problem I'll clarify next time and recommend chewing i forgot to add that thanks.