Yes, all these email services want you to pay up for them. I think this is the price tag for privacy.

I have switched to Mailbox org a couple of years ago. I had a freemail provider before that. Unfortunately, this providers’ data got leaked, and therefore I got pwned, luckily only resulting into a tsunami of spam. The entry-tier with Mailbox is 1 € per month (= 12 € per year) which is compareably cheap in my opinion. Of course, it depends on what features you desire - more features cost more money. They also offer a free trial for 30 days (but it is wise to start the free trial at the begin of a month, as far as I recall).

The process of switching the email provider took me at least 6 months, where both the old and the new email adress have to exist simulatiously.

If you need to register quickly to an online service, i can recommend Temp-Mail org. Its free, but you need to have the tab opened for the registration process, as all data (including the free temporary email adress) will be deleted once the tab is closed. I used this service to register with my home instance, because back then I didn’t want to expose my real email adress.

You should look into this

Yeah, Big Pants is into this. What if instead of phone cases manufacturers sell pants to carry the phone around. Imagine…
… the iPants. Specially made for carrying the latest iPhone with you. For just 2999,-. You can’t wash it tho, and it will not be compatible with the upcoming model.

It’s not even flagship phones. Even the cheaper ones are huge. When I had to replace my LG phone (6") I went to an electronics store to see what’s on the market right now. Of all phones availiable there only were two android phones (I don’t know which brand) that were sized similarly to my LG phone. Both of them were in the 800-€-price-range.

Similar with iPhones. Almost all models exceeded the 6" screen size, except for one or two models which were in the 1000-€-price-range. They also had an iPhone SE there, that had the desired size. I bought this as a refurbished one online for a fraction of the original price.

It’s harder and harder to find a phone that has a size that either fits in your hand or that can be carried inside your pants without restricting your ability to sit down while the phone is inside the pocket.

Apples eco system does have pretty good safety features. As far as I have heard, Apple is indeed not up to sell user data outside their eco system. However, they collect data from their users and use it for their own purposes. It is always a good advice to go through each setting (of phone as well as laptop) and evaluate if it is needed for functionality (e.g. location services or access for the camera or contacts). Not only will this measurement reduce the amount of (usually) unneccessary data that is being transmitted otherwise, but it will also improve battery life as well.

Do you mean iCloud Mail? I assume it is as secure as all the other iCloud services themselves. Personally, I don’t use iCloud (except for the “Find my” feature). But you can set up any third party Email service with the Apple’s Mail app. I use Mailbox.org as email provider and have it set up with the Mail app on my iPhone. It works flawlessly. Third party email providers often come with additional costs (the lowest tier with Mailbox.org was 12 € each year when I switched from a freemail provider a couple of years ago). I don’t know if iCloud Mail is free of charge, other than additional storage space.