Work on a draft, not the live page
WordPress lets you save a page as a draft that only you can see. Make your changes there, preview the page on a phone and a computer, and only publish when it looks right. Changing a live page directly means every half-finished edit is public.
Know how to go back
WordPress keeps earlier versions of a page, called revisions, so you can restore an older one. It does not keep a revision of everything, such as installed plugins or theme settings, so be careful with those.
Be extra careful with the big actions
- Deleting a page: it can break links from other pages and search results.
- Installing or removing plugins: some change how the whole site behaves.
- Switching themes: it can change how every page looks, and some custom styles are saved per theme.
- Publishing: once it is live, search engines and customers can see it.
Treat each of these as a decision you confirm, not a click you make while thinking about something else.
Keep backups
Whatever tool you use, keep your own backups of your site, ideally automatic ones from your host or a backup plugin. A backup you have tested is worth far more than one you have only hoped for.