Firefox is still preferred by many users who always think of hassle-free browsing. Most of the times there are no troubles involved but users address frequent Firefox crashing in Windows 10, if you have also confronted with same trouble then try to enter Firefox via safe mode or you can also try to disable the hardware acceleration which is another main cause of the issues you are facing. There is no need to be confused because you can sort out the trouble at your end.

Firefox crashing in Window 10 Support
Firefox technical support number