In our installation of Kali Linux 2023.3 (also in older version) we can see that if we see other language in browser then it is not readable easily. 

The occurrence of this issue is attributed to the absence of Fonts for other languages in our Kali Linux system. In this tutorial, we will address the language and font problem in Kali Linux. Resolving this matter is a simple process – all that is required is downloading the fonts for the relevant languages and placing them in the correct location. That's it.

First of all we need to download the language and fonts from the internet. We can copy the fonts from other Operating systems (Ubuntu and even from Windows).

We just uploaded the files as a zip file. It can be downloaded from this Google Drive link.

We have downloaded the file file as we can see in the following screenshot:

After finishing we can see that a folder called "Fonts" in our directory.

Now we just need to open the folder called "Fonts", and we got all the files into the directory as we can see in the following screenshot:

We need to copy and paste these all files into /usr/share/fonts directory. For becoming a non-root user we can't paste these files directly on the directory. We need to open the file manager with root permission.

So we need to close everything, and open a terminal. We need to type following command to open our file manager with root permission:

sudo thunar

After giving our sudo password we can see that our Thunar file manager opens with root permission.

Then we just need to go into the "Fonts" directory and select all and copy everything. We can use keyboard shortcuts CTRL+A and CTRL+C for this. 

Then we need to go to the /usr/share/fonts directory, and paste everything here by using CTRL+V (or anyway). That's all.

We are done. Now we can open again Google's homepage and see if it works or not?

It worked.

We also can copy these font files from a Windows computer. Those font files will be located on C:/Windows/Fonts directory. We can copy them on a USB drive and paste on Kali Linux it also will work.