Do behavioral restrictions ever cool down?

Lemme explain. Sometimes i am very toxic, and i have quite some permabans behind me. Thing is, i really don't wanna lose all the mastery points i earned on this account, and after i got a 14d ban i started taking a lot of care to not get reported again. Incase i have a bad game at some point (everyone can have one from time to time...) will i get a permanent ban even if a lot of time has passed?
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