Misc files in Telegram are essentially files that dont fit into any specific category like documents, images, videos, or music. Theyre often created by different apps on your device and can include things like temporary files and cached data. If you delete misc files, its unlikely to cause any immediate problems with your device, but some apps may take a little longer to load the next time you use them as they recreate some of the files you deleted. Some misc files may be important for certain system functions or apps, so its best to be careful when deleting files.

Its worth noting that Telegram has a cloud storage feature that can be used to reduce the amount of local cache on your device and save on storage space. If you need to free up space on your device, you can use the Clear Cache option in Telegram to quickly delete cached media by type.