As a different perspective - we don’t post anything with kiddos in on social media (aside from the odd hand or foot). We live a long way away from family but can direct message them videos with new achievements and routines.
And honestly, with child’s permission, post every meet sure, it will pop up in memories later, it’s fine, but if you are doing a post on a meet every other weekend or every week, don’t make a HUGE post, with a long paragraph, just put a few vids and photos, maybe scores but end it at that if you are doing this frequently. If you do maybe once every other month, then make a big deal of it if you want, include improvement in scores or certain skills, if a kid is in excel or optionals, include if they got out an upgrade in a routine or something.