Autotune Failed, what is the problem

Hello everyone. We made 2 flights for the autotune settings of our 6-rotor (15kg) hexacopter. The flights went well, but we received a Autotune Failed warning 2-3 seconds after pressing autotune button. We couldn’t figure out the reason for this. There are 2 LOGs here. Could you review them? Also, is there a problem you noticed in the logs, even if it is different in this regard. What do you find successful and what do you consider problematic?

Link 1 - First flight
Flight Review (px4.io)

Link 2 - First flight
Flight Review - Hexarotor (px4.io)

Is it possible to manually adjust PID settings without autotune? By computational mathematical means?

Is there a catalog where we say this PID is good according to frame dimensions? For example, XX drone uses this PID. YY drone uses this PID. If I access this data, I can make manual adjustments on a PID suitable for my frame and dimensions without AUTOTUNE. Thank you.

Duplicate of Autotune Failed. LOG. PLS help me.