Apple's Custom SF Symbols

i hope, there ae few areas and siv symbols that i wish they would expand. There isn't asof symbols for all the different kind of work out types you could have. But other than that, that's the only area that i've ever run into where i like, but i don't want to get anywhere near trying to do this myself. And so whether or not anyone else our in some way a wonderful world if lots of people use them.