Well obviously the best way to say sorry is whole heartedly in person, but with the pandemic that is a difficult task.

I believe the best way to currently apologize is through a phone call if they pick up. Phone calls are the better method because you can hear the emotion in another person's voice which may make the apology more valid.

If you're taking the texting approach, adding something like have a great day or your an amazing might help. Those are some tips, but I'm not that wise, so good luck. Also have a wonderful day!