InReach or other sat comm device is paramount when hunting alone, even when you're "not going far."
https://hunting-washington.com/smf/index.php/topic,265897.0.htmlShooting a downed bear in the head seems ludicrous to me. 7mm covered it well in his earlier post. They're powerful, tough animals. But they're not demons. Just keep your wits about you as you approach.
+1 for trekking poles. They're really nice to have when packing out and they're infinitely useful in an emergency (shelter, spliting hurt limbs, etc etc).
Think carefully about what would actually happen if you get hurt or have a medical emergency in the field. Make a plan and communicate it to your loved ones, and then do you best to put that out of your mind and have fun!
If you're anything like me, solo hunting is one of the great joys of life.