If you don’t have access to a user researcher but have access to a sample of your users, you could conduct some primary research by sending them a short survey.
Os nad oes gennych fynediad at ymchwilydd defnyddwyr ond bod gennych fynediad at sampl o’ch defnyddwyr, gallwch gynnal rhywfaint o ymchwil cynradd drwy anfon arolwg byr atynt.