It sounds like there not enough powering the starter motor.. This has happened me a few times when I haven't started my bike in a while, it normally works fine when I start it while it's charging.. I reckon you need a new battery.. Good luck

#1.your teeth on your sprockets might be worn. #2.your chain might be too loose. #3.your chain might be rusty, depending on how rusty and if the links don't move freely you probably need a new chain.. Good luck

To check if the remote is working or not or if the batteries need changing, open the camera app on your phone, point the remote sensor at your camera and your camera should pick up the infared.. Try this with a remote that is working first so you know what to look for..