Hi @Mr. Peacock ,
Do you want to migrate your SharePoint 2013 to SharePoint 2019?
To upgrade to SharePoint Server 2019, you must upgrade SharePoint 2013 to SharePoint Server 2016, and then upgrade to SharePoint Server 2019. Your databases must be at a SharePoint Server 2016 RTM version or higher when you upgrade to SharePoint Server 2019. Any database with a lower version will be locked and upgrade will not start.
I would suggest you create a new farm > copy databases to new farm > upgrade service applications > upgrade content databases and site collections
For Reference:
High level overview to upgrade from SharePoint 2013 to SharePoint Server 2019
Upgrade to SharePoint Server 2016
Upgrade to SharePoint Server 2019
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Hi @Mr. Peacock ,
Thanks for your reply. You can accept the answer if it helps. It will do great help to those who meet the similar question in this forum.