Hyundai i10 my foot keeps slipping off the accelerator pedal. can you buy a wider pedal

Your pedal should have a rubber cover already fitted . You cant buy a bigger one to fit pedal . On some other cars , where space allowed I have managed to remove pedal and welded a bigger contact section to the pedal to help disabled driver . You would have to contact your garage or a body shop to see if this is feasible with your car . https://www.autopartspro.co.uk/carparts-online/pedals/hyundai-i10