Dodging is fine, it's a game, you should have fun. For leashing it depends on if you mean for a jungle or for doing gromp/krugs for you and ADC to get levels. See my response to left for Zed for my opinion. At sub 30 levels (and even a lot of jungles when you're playing w/ all people who are level 30 accounts) many jungles really need a strong leash to not be set super behind in terms of clear speed. If the jungle is behind, they can't gank bc they are under level and have no items, so it is probably worth giving up a slight advantage (1 or 2 creeps) if it means your jungle is able to invade theirs since they are healthier, or is able to gank sooner or be stronger in counter ganks and stuff bc they cleared better.
Also I generally liked playing intermediate bots for a while just to get some levels and really get used to the game. People rage less, it doesn't matter where you go really, and you can play whatever you want and win. When you start stomping bots on the regular is when I really think PvP is worth doing unless you just really like PvP. If I play my main in bots to get the daily IP bonus and win fast I'm usually at like 40-50 kills by the end because I play Heimer and push fast, but a lot of people in bots want to camp kills for some reason instead of ending for that 150 IP bonus and dropping turrets in front of fountain and just killing every enemy bot before they leave the fountain tends to get your team to end the game sooner. (No one really cares about stalling out the game to kill bots when they realize that you can just sit at fountain and not die. Usually after the second or third penta kill where my team was trying to get in on it but can't w/ melee champs they just push and end)
I'm not good really (low silver) so stomping bots is a pretty good measure of being ready for pvp. I'd say intermediate bots are probably low bronze level skill wise.
