Search the forum. There have been discussions about installations on Raspberry Pi servers. That said, either the server or cloud editions will provide web access.
I see you joined the forum back in 2016. If you’ve been using the program that long, you know its features. If you haven’t actually been using it, I suggest thinking carefully about your needs. Manager is a full, double-entry accounting system focused on small businesses. As such, it does a lot more than track expenses. But it also takes a lot more work to use than a typical personal finance program. In some ways, the discipline required for a double-entry system can make personal financial management more trouble than it is worth.