I've read threads like this before on here & I know what I will say will not be well liked. But it's just an opinion.
I feel the main issue here is jealousy. When humans or primates meet the first innate response is to size them up. Sometimes we don't intentionally do it; even subconsciously.
We compare ourselves to another & deem ourselves maybe inferior. I feel this happens a great deal with women. We become jealous of another female.
You said you feel insecure. Why? Then that leads you to anger. Why?
Maybe write down what thoughts you're having in your head & who is actually saying them. Where did they originate from?
I bet if you do this several times you will "hear" the same things; same thoughts. Broken record thoughts telling you the same things.

When I feel this I have to ask myself why. Why am I degrading another woman based on her looks & actions when really I should be celebrating another female, not putting her down. If she's beautiful I can appreciate that along with the next person & admire how lucky we are to be female. We rock!

Maybe it comes down to (in the US) our Puritan values that anything sexual should be done behind closed doors, should invoke shame & make us feel even dirty.

I never really hear much about women comment that there's not enough male nudity. I would love to see more male nudity to even out this social scale we view. Men fought for the right to go topless & won! We're still fighting that today.

I guess the answer is just to find channels that don't carry those storylines. Find movies that don't show any nudity or turn the screen off.
I stopped watching the news 9 yrs ago bec I felt it was triggering & graphic. I know that won't change. But I can read news & still stay abreast of it.
I guess ask yourself the question of why nudity or scantily clad women bothers you so much. What do you hear in your head? Would you feel differently if it was just men? Do you feel differently when your partner is not there?
I hope you find some answers that help with your anxiety.