Main locations are actually on the inner side of the ankle where you can feel that prominent ankle bone, massage very gently in circular motions and on the front part of ankle.

Massage can be helpful for pain and swelling. I recommend you make an appointment with a foot and ankle surgeon (podiatrist) for diagnosis and appropriate treatment options, as this will direct the area to massage pending diagnosis

It depends on your symptoms and/or diagnosis. There are options for management of pain. A thorough history when you are evaluated by a foot and ankle specialist is the next, necessary step.

Massage may not be the best idea for your ankle pain. It is important for you to get a proper diagnosis. Certain pathologies may be exacerbated by pressure or massage.

Where it hurts. Use an anti-inflammatory cream such as Voltaren.
Thanks.