Caron: Thank you for joining us and sharing your insider insights. Your daughter, along with all of Bryce's friends and family must have ongoing grief about his disappearance.
You posted, (bolded by me), that: "...There is no way he would just make a new life and ignore and hide from his mom..."
I agree with your assessment, with the exception that if Bryce was experiencing disordered thinking by some unverified trigger, he could have fled. However, it is likely he would have been spotted, reached out, or found by now.
I think it's important to rule out what many people on this thread think is the most likely....he is in Caustic Lake.
I strongly suggest another search be conducted, and perhaps even Adventures With Purpose could be leveraged. They specialize in finding vehicles under water, but perhaps they could be helpful with their specialized sonar.
Surrounding Bryce's loved ones in prayer
Amateur opinion and speculation