I've used the built-in Windows movie maker before and it sufficed for simple projects. If you need to compress heavily VLC media player does a good job of it.
Vegas was my main program, but its pricey, & has a learning curve, + its more of a serious program
If you're on windows 10 , essentials didn't come with the newer operating system ,
but you can still get movie maker in the windows store ,or if you have access to Windows 7 PC even better. The classic movie maker (last I knew) did still work with windows 10 perfectly fine, they just stopped including it for some reason