Help with strange Mac problems, kernel panic and other things

Hey there! My Mac has kernel panics about every 2-4 days and has for the past few months. Been trying to fix it but no leads as to why it’s doing this? As for the other problems, every time I try to restart it, whether it’s right after an update or not, the computer starts the restart normally but then stalls at the folder-less version of my desktop bg with a movable mouse?? I’ve left it like this for up to 2 hours so far and it just stayed there until I shut it down using the button on the back. I’m actually doing this again right now after downloading high Sierra. Also the kernel panics seem to often happen about 1 hour or so into me watching streamed content but not always. Any help on what to try is appreciated!! I couldn’t really find any similar problems elsewhere. (Also Just recently ColorSync utility has been opening all my jpegs and not preview?? It’s weird)