Playing Nidalee requires mechanics and I do not recommend to play Nidalee on low elo since she is way too advanced. If you master her you can get incredibly high winrates and reach high elo.

As Nidalee you wanna make sure you get ahead in the early game and snowball as much as possible through out mid game since Nidalee falls off late game.

A good solid clear path though would be

1. Red
2. Mid lvl 2 gank

or

1. Red
2. Raptors
3. Scuttle
4. Invade enemy opposite buff.

Nidalee is great at counter jungling since she is fast at clearing most jungle camps and can jump over walls with W in cougar form which give her insane mobility and pressure all over the map.

Nidalee also has great substain with E in human form which heals and gives bonus attack speed.

1.Start Human Form
2.Use Q (Spear)
3.Use R and go to cougar form (Ultimate)
4.Use W to jump to your enemie(s)
5.Use Q on cougar form
6.Use E cougar form
7.If you do not kill your enemies with this combo, go back to human form
8.Heal yourself with E
9.Use auto attack or abilities to kill them.

If you are fed you wanna look for some poke with spears until they eventually are low enough on hp for you to jump in and kill them.

If you are behind on the other hand you wanna stay a little bit back and heal your adc and try to keep him alive so he can carry the team fight for you.

Buying Hourglass when ahead is really good for Nidalee since you will be able to jump in and kill someone and go into hourglass so your team can come and save you.

If you are behind you wanna build Iceborn instead of Lich bane and ardent censer for better healing for your adc.