Im getting this popping sensation in both ears and a feeling of fullness in my left plus a bubbly sound. i also have crackling in my right ear when talking and i can feel my ears popping when i put my finger in there. whats going on?

Those sounds are usually caused by varying pressures in the middle ear from the eustachian tubes opening or closing. Swallowing, chewing,yawning all cause crackling sounds to appear or disappear. Nasal congestion or polyps cause more of a blocked sound. Sometimes ear wax moving near the eardrum causes sounds. If you have concerns, your physician or an ENT specialist can examine & advise you