I couldn't find any export or import tools for these archives. They contain text for each section. I want to just translate texts. It appears to contain not only text, but other files as well. I've uploaded all the archives. MP folders aren't very important. I think it's related to multiplayer. Can someone help me?

LEVELS.7z

If there are no tools for reading files, then there are two options: either interpret the game engine's work as it accesses the file during gameplay, or modify your binary with any hex editor or write a simple script that will replace hex strings. For example, you have the following lines in level L_1_1:
000440E0 79 6F 75 20 73 75 72 65 20 79 6F 75 20 77 61 6E
000440F0 74 20 74 6F 20 72 65 73 74 61 72 74 3F 00 00 64
Which is equal to:
you sure you wan
t to restart?..d
Accordingly, you can change the phrase directly in the file (making it shorter, while By replacing the remaining space with null bytes, you won't be able to make the phrase longer than the original, as this will erase important gameplay elements. The only thing that could complicate things is if the file specifies the exact length of each line (but frankly, this is unlikely in this game).