Thank you for posting your query at DoctorSpring.com
You are suffering from sleepy feeling, mild giddiness, bilateral hearing loss ( right>left) and mild depression. As your MRI brain is normal. Mild giddiness and sleepiness may be related to mild depression or may be due to balance system problem( in inner ear).
Your need general assessment to rule out high or low blood pressure and sugar.
If normal we can start
Tab. Betahistine 16 mg three times for 10 days
Vestibular rehabilitation exercises also.
Hope this helps.
Dr. Sunil Jalan