Help me repair my bike Yamaha YZF 250 2004

Hello! My name is Marius and i have a motocross/enduro bike.It was hard to raise money to buy it. Now, at the start of a new season, I have some money to invest in it. The motorcycle is broken now and I need to fix it as soon as possible. The engine started to consume oil and have to change the segments and the piston. The fork began to lose the oil and must be serviced. The brakes also need to be serviced because they do not hold.I do not allow myself to invest because I am 20 years old and I have a small salary. I promise that every donation will be invested in the motorcycle.

Thank you so much for all your support and help.