I would get ear infections if I didn’t twirl a cotton swab deep in the ears to soak up moisture after showering.
By doing that you’re damaging your hearing in the long run by damaging the cilia in the ear canal.
Many years ago, I had an ear infection/build up of ear wax and regardless of the medical stuff the ear specialist did on my ear, he still insisted that I still NOT use swabs. Ever. He never recommended it nor anyone who specializes in his field.
Use the products marketed for this, such as Swim Ear. I also need to keep my ears dry and I love to swim. I use the silicon ear *plugs* (they actually just cover the ear opening) and also use a couple of drops of Swim ear after exposure to water. You could also use the ear covers in the shower.
I went from having a major fungal infection every summer to having none after using the ear covers, adding Swim Ear only whenever I had an inadvertent failure of the silicon, since the Swim Ear is drying and can be irritating if used regularly. I think shooters use them to prevent sound damage, as well.
What scuba divers use for Swimmers Ear:
1 part white vinegar
1 part rubbing alcohol
Works nicely on my sensitive ear.