Girls, can you please tell me how you clean your kids' noses? It clea…

Girls, can you please tell me how you clean your kids' noses? It clearly interferes with their breathing, sometimes it wheezes, and you can hear that they are blocked. I can't clean them like they taught us in the maternity ward "cotton balls to roll and wipe" the child doesn't let me take them out like that, they are still deep... Ordered a nasal aspirator - Otrivin aspirator, has anyone tried it? Does it really help? Or is it nonsense...