Would love to switch from Safari to Firefox on my iPhone. Found Mozilla Help instructions, but there is no listing in the App Store for "Firefox for iOS page." I see only Firefox Private Safe Browser and Firefox Focus: Privacy. Neither shows a Get or Install button. I tried tapping the first icon of these two. When I tap the icon, I see "open this link in external app? with a link. I can click ok or cancel. When I do either of those, it just takes me back to where I was. Please advise...