l i tried to help the team witch i did so many times just wasnt enough
If you're already behind, don't fall for the trap of "I HAVES TO HALP". Focus on not doing any more damage to the situation, not helping.
You've probably frustrated people more than you already were by "trying to help" where you just made things worse. I actually see this a lot with low ranked players, when they do poorly they seem to get it in their head that they have to make up for it or prove themselves. Nobody is asking you to make some huge play, or suddenly start carrying. Generally, if someone on my team is feeding I just want them to play safe and keep their head straight.
Also, as far as advice goes, frankly, don't play AP/on hit lane Nidalee. It's just not good. If you ask me in champ select for advice on how to play lane Nidalee, my advice is not to do it. There's no reason to play Nidalee in a lane, other people do what she would do better, safer, and easier.
Here's the point where you'd probably argue "but I want to play Nidalee because FUNZ". Well, do you want advice, or do you want to ignore it? If you want advice, be willing to receive it. If you only care about your fun, then nobody in your game is obligated to give you advice, and like the other poster said, there are endless resources available for you to find things on your own. If you want to ask people for advice, you can't reject it when its given. Beggars can't be choosers - if you won't take the initiative to learn on your own, you can't complain about what you do get.