l know l have to mix the oil with the gas my brother will help me with that but what kind of oil goes in the motor if the oil that is mixed is 2 stroke plus is there a reason that it wont take off slow at all it is like l have to floor it to take off smoothly. l know l sound like a ditsy girl but I've been riding my hole life l just never had to fix anything before

For the engine you need ''2 stroke engine oil''
For the fuel mix you need ''2 stroke fuel pre-mix''
They are both different, do not get them confused.

An RM or most 2 stroke bikes are built for fast and high acceleration from a standing start. -why you need high revs and quick clutch release
ie racing
It is not a bike you can just cruise around on.

as above

put engine oil in gearbox eg 10w/40 available at any bike shop. wrong oil could cause problems with the clutch and shifting. always mix your fuel in a drum about 25 to 1 petrol to two stroke oil.some oils can be mixed at different ratios,ask at the shop.failure to get these things right will wreck the engine