A lot of people in real life use ForeFlight these days. You can link it to MSFS but the subscription is very expensive (because it is meant for real world aviation).
A very decent alternative to ForeFlight for MSFS that’s free (albeit more limited) is Little NavMap. You can either link it as a real-time moving map, or you can just do your flight planning in it ahead of time and then print the plan and fly (it will download winds aloft data from NOAA, etc. and adjust your flight plan accordingly). I print to PDF and put it on my phone, then fly with reference to the PDF plan and my paper charts. I then use the aircraft trail in Little NavMap after landing to see how accurate I was.
Another great feature of Little NavMap is the fuel planning feature. You can download aircraft performance profiles for a lot of MSFS aircraft, and then your flight plan will also include fuel consumption.