One of the most important and necessary features of modern browsers is search engine friendliness. That is, built-in search systems, as well as various features to facilitate working with search engines. One such improvement is the
built-in search system in Firefox, which makes it easier for users to find information online.
Moreover, this system is also configurable, and that's what we'll talk about now. So, the search system in Firefox is implemented just like in all other browsers, through the address bar.
The search query can be entered into the additional field to the right of the address bar; there you can also choose which search engine to use. The 'Manage Search Engines' option is also available there, where you can configure how search engines work.

Here you can add, edit, and delete search engines. In principle, these are all the
available search settings for search engines that Firefox offers. However, Firefox also has a built-in powerful page search tool that can also be configured. To configure page search, go to the settings panel by clicking the button:

In the context menu that appears, select the '
Settings' item, then go to the '
Advanced' settings tab.

Here we have access to
1 very interesting
page search setting option. If enabled, the search will be performed dynamically, i.e., as you type. This option has virtually no impact on performance, but it is very convenient, especially if you use the page search feature quite often.
As for the built-in search engines, to install additional ones, you need to go to the official Firefox page, where you will find the corresponding add-ons. That's probably all the available search settings in Firefox.
That's all, good luck!