I’m a wrestler and really struggle with getting a secure fit. This isn’t specific to Airpods, but it does seem worse than other buds. I tried foam tips from Comply. They worked reasonably well, but their longevity was short and the small size means there isn’t much physical room for them to compress/expand for a good fit. Some attachment issues as well (though I’ve heard they had been sorted out).

More Airpod Pro form factors would be welcome, but the functionality is pretty good.