Hello, I have a similar issue. Although, no problems getting comfortable breathing w/masks. I have been given 5 ..yes five different masks and told not to buy my own until I am used to one of these 5.
I thought that this is part of personal gear w/snorkels and fins.
How does one get used to and get comfortable with A mask when you can't even get comfortable or get used to 5?
I am new, excited, & determined to learn. Intent on giving back to nature's blue resources.