Here's my bike fit primer:
https://www.bikeforums.net/21296948-post3.html
Go through the steps and see if it feels right and looks right in the mirror. If you can make it so, it's a fine fit. Might not be optimal for performance, but you won't be racing it either.
If you need to adjust reach by going to a different stem:
This bike probably has a stem which locks in place by tightening the Allen screw in the center, so it's called a "threaded" or quill stem. My guess is that this bike is big enough that you can install a threadless stem adapter and use any of the zillions of threadless stems available.
https://www.amazon.com/s?k=threadles...=1FFKYRFSZSIJE
https://www.amazon.com/s?k=threadles...f=nb_sb_noss_2