“Add to home screen” is missing

It opens in Chrome probably because you are clicking on a link in gmail using the gmail app. If I am right about that, in the gmail app tap on the 3 line menu icon in the upper left, scroll down to Settings and tap on it, then Default apps, and change the browser to Safari.

Tap on Edit Actions and add it back. As your list is not in the default order you have probably edited it in the past, and removed that option.

Do you see it when you click on ‘edit actions’? If so you will have to add it to the list again as an available option.

What browser is it? Are you using private browsing mode?

That is your problem Chrome does not support that feature.

It works with Safari. And any link you open from a text or email will always use Safari.

Did you try edit actions?

I just noticed that you are not in Safari, because you have a button in the upper left to go back to Safari.

Please, you also.

Keep well.