Options for a LaTeX installation for a retired person who uses it sporadically? I use OVERLEAF, I get messages to sign up. Price 179€/month!
I happen to be a retired person, who publishes a paperbook book sporadically, using my own document class and
lualatex. I do not use Overleaf or anyone else's installation but my own. My hardware is a Samsung tablet (10 inch screen), plus external Keys-to-Go Bluetooth keyboard, and Bluetooth mouse. It runs the Android operating system. I believe that this would also work for Chromebook.
Android may have an app named
Termux (from Google Play Store). But this is better: Get the
F-Droid app, which lets you install other apps. Then install Termux from there. You may need to "side-load" it. Does not require a rooted device.
When you launch Termux, you will see a Linux command-line prompt. This gives you access to a jailed Linux system (it cannot change Android, unless your device is rooted). Within Termux, you can install many things. Among them: vnc server, TeXlive, Evince (for viewing PDF), TeXworks etc., GIMP, Inkscape. With the vnc server active, you can view everything using the free RealVNC app (Google Play Store).
Details of configuration are beyond the scope of TeX, but within the scope of Linux. So if you wish to do this, find a friend who knows something about Linux, and ask for help. It does not require much knowledge.
I mention this because it brings a full-fledged TeX system to Android. Works great. And, in recent Email, I learned that the folks at CTAN did not know about this.
As mentioned in the comments, you can use Overleaf for free without any problem at all especially if you work mainly by yourself and your documents are not huge and/or very processor intensive. The paid version obviously has other useful features, but depending on your use, you may not have much need for them anyway.
On the other hand, installing a local TeX Distribution on your own computer is really quite simple. Both of the major distributions (TeX Live and MikTeX) offer versions for all of the major OS versions. If you're a Windows user, MikTeX might be slightly easier to use than TeX Live, and it has the added benefit of on-the-fly package installation. If you're using a Mac, then just download the MacTeX installer, which installs a full TeX Live distribution along with a couple of great editors and TeX Live Utility to manage updates.
One big advantage of using your own local distribution is that you can use whatever editor you like, and most editors are substantially better than the Overleaf editor.
For years, before my institution paid for Overleaf subscriptions for us, I used MikTex with the TexStudio editor on Windows. These worked just fine - albeit with a little bit of added administration time. I wouldn't have switched except Overleaf is seamless between my various computers and is better for collaboration.