Welcome to the Forum. You need to verify the battery is good. If it is, it's probably the Main Fuse 30A. It's under the panel between the front and rear seat. NOT the 30A in the fuse holder tray.. That one is a Spare 30A. The one you're looking for is inline with the starter relay. You'd be better off reading through the owner's manual for instructions and a visual for what you're looking for. I have a link below for a 2015 R3 owners manual. It'll work for you, no matter the year model, for what you're trying to find. Good Luck https://cdn.yamaha-motor.eu/owner-ma...02F8199E0E.PDF
To ride or not to ride? What a stupid question! ... Anon
I first would try to check the negative (-) connection if you can snug it better and try again,
If it's a bit loose you won't be able to start the bike, it can cause your engine to shut due to riding if you did manage to start it.