Timing an apology right matters. Too early looks fake, too late looks forced.

An apology in the first ten minutes usually arrives before you have understood what you did, so it comes out as an attempt to end the discomfort. One that arrives weeks later has been overtaken by everything the other person concluded while waiting. The middle window is when you have genuinely worked out your part and they have not yet filed the whole thing away.

Take enough time to name the specific thing you did and its effect. Then go, without waiting for perfect wording. Say it and stop, since the naming is what repairs anything, not the performance around it.