You will never be done decolonizing your mind. You will never be done learning to not be racist.
You will do well for days, weeks, months, or even years, and then you will say or do something racist.
Accept that reality now. Set your mind on accepting that reality and apologizing for it now. Because if you don't, we'll see what's happened on the fediverse this past week play out again. White people being fragile and guarding their egos under a guise of "hurt feelings."