Hello amd welcome to frog forum!please use the other pets section for other questions but since you are introducing yourself its fine. With your criteria you are limited. Leopard geckos or small snakes are good and less complicated. However if you are willing to get a bigger cage (40 gallons) then a bearded dragon would be great. If by any chance you change your mind and decide to go big, a chinese water dragon will eventually be calm with you. However, handling wise, the best is the cuban rock iguana but they are huge! (Some people let them loose in their house like cats) and chinese dragons and iguanas are alot of work. NEVER EVER EVER get a green iggie, they are needy and agressive.