On a Mac, most cached files are kept inside the “Application Support” folder.
1. Open a Finder window and click Go at the top of the screen, and then Go to Folder…
2. In the search box that opens, type and submit ~/Library/Application Support/Microsoft/Teams.
3. In the folder that opens, find and delete the Cache, Code Cache, and GPUCache. You can delete them by right-clicking, or by dragging them to the Trash icon in your dock.