The Sunnah is to remove the armpit hair by plucking it. Some scholars say
that it is also permissible to remove it with any other method such as
shaving.

We also have to remove the pubic hair and the Sunnah is to remove it by
shaving it.

And Allah knows best

Sheikh, can you please clarify how the unwanted hairs should be removed. I mean from which parts of our body.