I sympathise, but talking to my sister I've come to appreciate a different point of view. I have an "app", a PWA, that she says she cannot find because it's not in the App Store. Despite telling her it's available as a website, this seems too much... she just doesn't use — or is comfortable using — Safari.
I dislike apps and avoid installing them in general terms. They're bloated and frankly I have better things to store on my phone (mostly music, but also photos, conversation histories etc). I do not need an "app" for submitting a form. Looking at a website. etc etc My favourite thing about using a website? It can't send me attention grabbing notifications. It can't harass me for perms. I'm 100% an outlier. My friends…
On my computer I have a few programs installed, which I just constantly. On the phone I need each app only a few times a month, if that, yet they all insist on being actual apps.