NOT ASKING FOR A DIAGNOSIS !! just want to hear others thoughts on my assessment experience and if it’s worth trying again or not as i feel like my assessment was handled very poorly 

hi first time using this reddit so apologies if i made any mistakes. i’ve been showing lots of symptoms of bipolar for years now. i’m already diagnosed with bpd and the psychiatrist who diagnosed me with that said i could also have bipolar. then when i went to my GP about this he said my case was too severe for him to diagnose and will refer me to a more qualified psychiatrist. i was on a waitlist for a while to get an assessment and when i did i felt as though the psychiatrist had no idea what he was doing to be honest. he didn’t know there were two types of bipolar (i think i have type 2) and said my manic episodes are just because i have seizures (which i’ve only had recently and been displaying mania for years prior to ever having a seizure) he even googled the symptoms during the assessment and then just told me i don’t have bipolar after about about half an hour of speaking. would it be a good idea to speak to my GP again and try to arrange a new appointment with a different psychiatrist? or is this how assessments usually go? i just feel like the assessment went very unprofessionally and i was left super lost and confused afterwards/: