1. That was not a quote-post. We have real quote-posts in qoto. That was just a link. I'm not holding that against you, by the way. Being on Mastodon you have no way to distinguish between the two. Hence why I suggested moving somewhere else if you really needed that feature.
2. I can't see what's so hard about opening a browser, but, as a piece of advice you won't take, you can safely use the browser on your phone to access Mastodon. The web UI is said to be (I haven't checked, so don't quote me on that) mobile friendly. Unfortunately, there are no perfect apps for the Fediverse, as far as I know.
Again, you can try different instances and different platforms. It's not that hard, but you have to accept that with a greater power comes greater responsibility, that is, with more options at your disposal, more complexity is added. That is inevitable. What you crave is not being given any options, so that everything is easy and familiar again, but that's not the Fediverse way. We crave options and freedom, and with them come the responsibility to use them correctly and the need to stay informed about them.
Tools are constantly getting better and easier, but they're being written mostly by passionate hobbyists in their free time. We're also willing to help as much as we can, but if you will not put in at least some effort, I'm sorry to say that Twitter is where you belong.
@ERDonnachie By the way, @bonifartius just used Markdown there to quote me. We can also use LaTeX syntax for writing math. And you may have noticed that I write a lot, because our character limit is much bigger.
See? Options. They're not complex to use at all. You're not even forced to use them, either. They're just there, at your disposal.