First I don't use the Avast Secure Browser or Chromium, but in either case:
Unless you saved those settings they are gone, to the best of my knowledge.
I regularly Synchronise my Firefox settings, so I can save them (not locally) and apply to another installation or if I did that from another installation I can update the current one. Not using Chrome/Chromium based browsers I don't know if they have similar to backup to Google.
I also do regular system backups, which is restored should be able to restore.