top left and right bottem burner wont light

Hi All
It would be so great if anyone could help me. 2 burners work and 2 burners dont work. The upper left and lower right burner do not work.

when you turn the dial - you hear the clicking noise but then it just never lights. if i put a match there it lights - so i know that gas is coming out. It just doesnt seem to be igniting.

i am a woman who is not very handy, but very much trying to be. is this something that i can do on my own? and if so what should i buy? last question - do i need to take the top of stove off - if so how do i do…