The answer is impossible to answer until you tell us more about your needs. Better choice considering what?

In general, untill you have terabytes of data or a significant amount of traffic (operations per second) database choice does not matter and you should be using cheaper option, where the cost should be assessed as a derivative of price of hosting, cost per operation, cost to deliver (how familiar you are with it).

When you have significant amount of data or traffic - only then you should worry about database kind or language. Until then this could be a premature optimization.

I just left a SAFe company! God the system was awful!

Tickets aren’t agile, tickets are scrum.

The heck you’re talking about? There’s a ton of free resources to learn the basics.

https://dotnet.microsoft.com/en-us/learn/csharp official Microsoft learning resources.

https://dotnettutorials.net/course/csharp-dot-net-tutorials/ for C# basics and .NET framework (which is backend standard).

For game engines you need specific tutorials in those engines.