The last browser update has wiped off any changes I made to bookmarks and passwords from the past year. How can I go back to a previous version and recover my details? This browser version is terrible.

The last automatic browser update (147.0.3 (aarch64)) has wiped off all changes I made to bookmarks and passwords from the past year. How can I go back to a previous version and recover my details? This browser version is terrible and looks exactly like Microsoft Edge which is not intuitive at all. I don't want to set up multiple personas, Its just me and the one computer? Please help me. Kerri