Hi matey
Put a pic up of your tank so i can see what you have in there. Plants, fish, subtrate, gravel, hardscape etc. 2 months to cycle a little tank isnt right. Especially with you doing the water changes etc.
IMO. I would be looking at feeding- how much & how often?
Filter- give it a huge clean, pipes and all.
Plants- plant fairly heavy. You want plants to work for you not against.
Subtrate- what do you have in? Likes of aquasoil have amonia spikes that can last a few months thats why regular water changes and good plants are recommended. Some soils and subtrates need capping with gravel. Do you have any probs with algae?
Test kit- what test kit do you use?
Guessing with the lack of plants you are not running Co2. A pic would help identify issues and if you can get me some info on the above questions that would too. Cheers buddy and do me a favour, dont get too disheartened as everything can be fixed.