iPhone 11 volume too low

OK so I’m not the only one having this problem obviously because I’ve seen this question asked before. My iPhone 11 sound is too low. If there’s a problem with this why don’t you do a recall or take care of it in house so that we don’t have to deal with this problem? Now what can I do without having to take it into Apple and pay you guys anymore money? I’ve feel I’ve paid enough to Apple over the years.