In other words, don't expect to switch from Word to Pages without problems.
As with moving to any new software application from any other software application that you were used to, there is going to be a learning curve associated. This is especially true of software that isn't meant for beginners, and which has to fufull the needs of many, including possibly professionals.
I've said previously that I don't think that Pages is a good choice if you are used to Word. This doesn't make Pages a bad program, it just means that it's not a clone of Word and you are going to have to learn how to use it and get used to it if you are coming from Word.
Until recently, I did indeed use Office on my previous Mac, but the cost of doing that seems to have gone up more than somewhat,
You can get the latest version of Office for the Macintosh for $40, no subscription necessary:
Office 2021 Home and Business Lifetime License Key – For MacOS
$40
https://www.joywarp.com/product/office-2021-home-and-business-lifetime-license-key-for-macos/
It seems like an offer that is too-good-to-be-true, but at this point a lot of the folks in my user group have purchased Office from the above company, and they've all had excellent experiences.
and I thought that as I love the Mac hardware, I ought to give the integral free software a chance too.
Many new Macintosh users assume that the free, included application software for the Macintosh that comes from Apple is somehow better than any other software. It's usually good, but it's not designed to be "the best." It's also not necessarily designed to be the "easiest". Apple's free included applications are designed to be a decent compromise for the widest number of users. That's why Pages may have more features than a newbie might like, yet it still isn't as wildly powerful as Word. Pages isn't designed for newbies, and it isn't designed, really, for power users either. It's designed to be in-between. That means that it might not be the best choice for YOU.
Pages IS free, which is nice. But this is the Macintosh; there are a bunch of really high quality applications for the Mac which are free. See:
http://www.macattorney.com/free.html
Apple's applications may not be the best choice for your needs.
I did not know that there were other Office-like systems for free, my normal approach is to be wary of software from sources I don't know about.
The Macintosh doesn't have the astoundingly horrible malware problem that Windows has. Any software that you get directly from a legitimate developer should be perfectly safe. There is no need for a large amount of trepidation when doing things on a Macintosh.
You may get a warning message when you go to install software that you download from somewhere other than the Apple Store. e.g. "This software is from an unidentified developer." That DOES NOT mean that that software is dangerous, or that it won't run on your Mac. But you may need to know the steps necessary to get such software installed. See:
http://osxdaily.com/2012/07/27/app-cant-be-opened-because-it-is-from-an-unidentified-developer/
Thanks for the training links, I will persevere with Pages for a while longer...
If I were in your place, I'd give up on Pages. You don't need to invest the time and effort into learning how to use it, as there are excellent free alternatives that you should find much easier to use. I'd try both of these free products, and see which I liked better:
FreeOffice (free)
A Microsoft Office clone. Not as powerful as Office, but probably all that you might ever need. Excellent compatibility with Office format files.
https://www.freeoffice.com/en/
Growly Write (Free)
A surprisingly competent free and easy to use word processor! Some say that this is the word processor that Apple should have included with the Mac.
http://www.growlybird.com/write/index.html