Dear Mark,
Thanks for your updates and letting us know the current situation in your environment.
Yes, you can create a survey or form instead of Microsoft Forms. You can embed the PowerApps for on the SharePoint site page as well.
As you can click on Integrate>PowerApps>customize the form to create the form and the form is already connected and synced to the SharePoint list, each data you type and select in the form field will be automatically populated to the SharePoint list.
Here is an article about how to start with PowerApps for your reference, hope it helps in your environment.
Welcome to share any updates when you have time if you need further help on this issue.
Thanks for your effort and time!
Sincerely,
Cliff | Microsoft Community Moderator