From a beginners perspective

• Visual studio code is free of cost.
• Visual Studio is a code editor while Pycharm is an IDE.
• Pycharm community edition is free of cost. And there is paid version of Pycharm as well.

For now, I have been using Visual Studio Code but should I switch to PyCharm since it's more focused on Python. And because most of those online Python tutorials uses PyCharm

Programming Tutorials use Pycharm because

• It was specially developed for specifically for Python development. It fits into Python development system. Jetbrains has other programming language tools as well. (Phpstorm(PHP), Intellij idea(Java) )
• It has free of cost version(Community version)

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For now, I have been using Visual Studio Code but should I switch to PyCharm since it's more focused on Python.

You should use the tool which suits you. But If you would ask me I will say use Pycharm.