Gears are rubbing bike shop said it’s normal
Hey guys and girls first post here
I bought a brand new hybrid bike today and when I’m in certain gears the chain rubs on what I believe is called the derailer? I took it back to the shop and they said this is completely normal in some gears but I don’t understand every bike I’ve had before I can use all gears fine. For example it happens in gear 1 of left and gear 1 on right which I would normally use to go up a hill. But the man in shop said I shouldn’t use that gear? Please can someone help it’s driving me insane ☹️😩
thanks guys in advance