If you've opened this document, it means you're having some trouble installing a map. Let's try downloading and installing a map from the workshop using an example of a map with a guitar.

IMPORTANT! Make sure you have the csgo_legacy version installed; otherwise, this won't work. Go to the list of available beta versions in the CS2 properties and select csgo_legacy. After downloading, when you launch the game, you'll see a window allowing you to choose between CS:GO and CS2. Now we can begin.

1.Download and open the file Navigation.json, then use the search function to enter any information you know. I remember the name, so I'll enter it.

2.After entering the words Playable guitar in the document, it will take me to the section where the map is mentioned.

3.Find the line "FilePath", which is the first line among the map details. This is the path leading to the map file. In this case, the path is 2021/1715283087735886434/soiloveplaycsgoandrg.bsp.

4.Navigate from the root folder to the 2021 directory, go into the folder 1715283087735886434, and download the file soiloveplaycsgoandrg.bsp. Alternatively, copy the path and paste it into the address bar like this:
https://disk.yandex.ru/d/EKAI0qKTkQkXtw/2021/1715283087735886434/soiloveplaycsgoandrg.bsp

5.The downloaded file is NOT the map itself, even though it has a .bsp format. It's actually an archive, which you can extract using any convenient archiving tool.

6.Inside the archive, you'll find another .bsp file, and this is the actual map.

7.Open Steam, right-click on CS:GO, go to Properties -> Installed Files -> Browse -> csgo -> maps, and place the extracted .bsp file into this folder.

8.Now, to play on this map with your friends, invite them to a lobby, start any standard map, and after all participants have loaded in, open the console and type:
map soiloveplaycsgoandrg.bsp
(In your case, the file name will be different.)

9.HF