Lenovo laptop. Won't charge even if the charger is connected?

It started 3 weeks ago and when I connect my charger it needs to be on a certain position and now it is really hard for it to even charge for 2 seconds, my parents are angey, please help.

That's usually caused by either the cable cracking where it enters the plug, or the solder joints where the socket connects to the motherboard coming loose.

If you can make it work by holding the plug still and flexing the cable, you most likely need a new charger - look on ebay for the make and model of your laptop plus "charger" - most are really cheap.

If it only works when you move the plug body around, it's the socket in the machine that needs replacing.
A local computer shop should do it relatively cheaply - ask at several and see which gives the best price.
(The socket itself is possibly 5-, but it can take a couple of hours to dismantle and re-assemble the computer, so the overall cost can vary quite a bit).

Get a new generic charger.