Are there plugins (solutions) to make changes to a Wordpress theme?

Question

WordPress

A question from the area of ​​​​intermediate development..
Is there a plugin or any solutions for making changes to the theme (not counting the code editor)
There are visual designers implemented as a plugin. This is a bad option.
There are frameworks. I can’t understand how they work at all .. just a theme with a lot of settings, for example, the same Gantry.
Is there a way, for example, to stretch the layout so as not to delve into PHP directories and files, but simply throw it 1 time, but so that there is no attachment / dependency on the plugin ?
In other words, if I have a very basic PHP and I DO NOT want to build sites on constructors (like elementor, wpbakery etc.) but I want to make fast, responsive sites without digging into the code, what should I pay attention to, which solution should I use?
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I would be grateful if you answer the question without a wise philosophy)

Answer 1

Phaha :))
To write a topic on the VP, you need to:
You will have terrible topics, but very quickly :)

Answer 2

1) There are child themes for making changes to ready-made themes 2) Starting themes
are better for stretching your design on WordPress 3) I don’t know what caused your pluginophobia. In commercial development, it is not reprehensible to use ready-made solutions. 3.1 For example, the same Elementor allows you to create your own design regardless of the current theme 3.2 Here is an interesting solution that will help you "save" on programming https://toolset.com/ 3.3 I myself work on Advanced Custom Fields Pro + Bootstrap Starter Theme 4) What you should pay attention to and study: A) The hierarchy of WordPress templates. A properly named file and you don't need to write dozens of lines of code.
https://wp-kama.ru/id_7654/ierarhiya-fajlov-temy-s...
B) Basic WordPress functions that are used in templates
https://wp-kama.ru/handbook/cheatsheet
C) Frontend framework -enda, for example, the same Bootstrap
D) Plugins for customizing the backend, for easy site / content management. ACF, Carbon Fields, Types, thousands of them.
5) Bonus, useful site: https://generatewp.com/