How can one change the font on a website?

[manszak]

Hello! How can one change the font on a website?

As far as I understand, when changing the language on the website, such as to Russian, a default font is used. However, I would like the font to be the same for both Cyrillic and Latin characters. I want to use the custom font "Rogan." The theme is called "Warehouse."

Language German(Deutsch)

Language Russian