does bumblebee every struggle with mental/psychological problems during RID15?
if so what types and how would mea comfort him.
These are just based off my own assumptions and observations, counted as headcanons! I'm open to disagreements and further discussions ('w')/)
For me, I feel as though Bumblebee would definitely have some PTSD related to the events in TFP (Notable mention; Losing his voice box to Megatron, being operated on and losing his T-cog to MECH, the Outpost being bombed and destroyed then being separated from his team which he considers his family, and then literally dying then coming back to life again).
I don't know if Cybertronians do dream, (though I like to headcanon that their processors replay memories during their recharge when under too much stress), Bumblebee would definitely have nightmares when it comes to his voice box and the nature of how he lost it. (Based on an old convo I had with @nova--spark mwehehe)
And moving onto RiD, to me it looks like Bumblebee has an inferiority complex. Being thrown into a mission on Earth, having to lead his own team (though I do firmly believe that Bumblebee does have leadership qualities, as shown in TFP: Predacons Rising), the constant comparing himself to Optimus, his insecurities when it comes to leading his team paired with the team not really taking him seriously most of the time, and when he gets snappy with Optimus after he comes back.
Bee having the need to firmly state and secure his place as leader to OP because he's afraid that Team Bee won't need Bumblebee as the leader anymore because Optimus is back and he's falling into his insecurities and fears of failing and not being able to fill in OP's metaphorical shoes.
(I completely forgot the bit of "how Mea would comfort him" but being as she struggles with comforting others and having her own issues, she just tries to be there for Bee and lend her ears to him whenever he needs to rant or a shoulder to lean on).