What is common screen resolution for android game to be selected

i am searching this question from much time i have found that 1080*1920 is commonly used for android games but when i set this in my Canvas Scaler reference resolution and the result is good in xdpi devices which have 1080*1920 resolution but it is not perfect in smaller resolution like characters have no spaces and overly on each other. can anyone here please tell me what size i choose for my game ? a smaller or large ?