Maybe one of these points can help you…
Change permissions: Make sure the start-tor-browser.desktop file has executable permissions. You can do this by right-clicking the file, selecting Properties, and then changing the permission to run the file as a program.
Change command: Try changing the command. Instead of using ./start-tor-browser.desktop, try ./start-tor-browser. Note that you must run this command in the browser directory.
Install missing libraries: If the problem persists, it could be due to missing libraries. In some cases, the error libdbus-glib-1.so.2: cannot open shared object file: No such file or directory may occur. You can try installing this library.
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