It depends on whether you are using 'good' as a noun or as an adjective. Most of the other answers assume that you are using it as an adjective, for example: "my car is more good than yours" is wrong, you should always use 'better' here. 'Good' can also be a noun, for example it is correct to say "There is more good in giving than in receiving."

Better is the best option, More good just sounds a little odd. For example you could say I think Mexican food is better than American food. You would not say Mexican food is more good than American. I hope this helped. Keep working at English your doing great!

hi dude, it does not matter if other dudes can understand to you. do not think all these things. don't be nervous.

Understandable, but incorrect.

good<better<best Italian food is better than American food. My dog is the best dog in the world.