Request for guidelines - Email Address export from old OUTLOOK to the NEW OUTLOOK

I use MS Outlook for my official matters and use a lot of Email signatures for the same. Recently I came across the new Outlook & wanted to switch over, but I couldn’t find all my signatures stored on the device.

I am lazy to copy them one by one & add them to the new one. I investigated guidelines on the web & YouTube but couldn’t find them. So, I am writing to you hoping that you will be able to help me fix this & start enjoying the new Outlook. Attached is a link (screenshots) to understand my issue.