Try this and try connecting Tor after each step.
- Open
brave://settings/clearBrowserData
and clear Brave’s history. - Check if tor is not blocked by your firewall.
- Toggle ON/OFF ‘Private window with Tor’.
- Enable ‘Use Bridges’ and try different ones.
- Flush DNS
- Use public DNS such as google 8.8.8.8, 8.8.4.4
- Open
brave://settings/security
and disable ‘Always use secure connections’ and ‘Use secure DNS’.