Copy library from SharePoint On Premises to SharePoint Online

Hi, for my Copilot Agent I need my documents in Azure Blob Storage.

 I'm trying to use Copy my library from SharePoint On Premises to Azure Blob Storage directly. But in power automate flow I see no possibility to access library from SharePoint On Premises. If that is possible then guide me and it'll be a breeze for me.

As a way around I tried to sync files from SharePoint On Premises to my local machine using One Drive business but there is some long path related issue and I couldn't make it.

Otherwise idea is copy my files from SharePoint On Premises to SharePoint Online and then setup the Power Automate Flow to copy files to Azure Blob Storage. I'm done with second part for another library (SharePoint Online to Azure Blob Storage) but I'm not getting any idea how I can copy my site from On Premises to Online version of SharePoint. Someone referred me SPMT but I don't think that is going to help (https://learn.microsoft.com/en-us/sharepointmigration/how-to-use-the-sharepoint-migration-tool)

Any guidance in this regard will be highly appreciated.

Thanks
Ahmad Ahsan