What is the best way to clear ear congestion? claritin, (loratadine) zyrtec-d, and neti pot did not help. i have allergy-like congestion, but can not clear left ear

Maybe steroids: Your eustachian tube may be congested. It might be time to see an ENT for consideration of either nasal steroids or a tapered dose of oral steroids. In the interim you may also consider using afrin nasal spray 2 sprays each nostril twice a day for only three days. Combine this with gently trying to clear your ears by pinching your nose shut gently and blowing against the closed nose.