I keep getting the same previews over and over. Many of those I have made inactive because I don't want to see them.

Is there any way to change the variety of previews that show up on the app?

Other than what you have already done I don't think so. 😕 But then I don't use the free preview push.

But then I don't use the free preview push.

But then miss out on possible flash sales of 10, 15 or sometimes 20%.
Great for when you are building up your cards.

That's true. I remember that from the brief time I tested it out. 👍 😎

Is there any way to change the variety of previews that show up on the app?

Well, there is one way - but not a useful way. You can buy the previews that you don't want so that you then then are offered others instead.

Seriously, this question has been asked many times and the answer has always been that we get offered a selection from the most "popular" (highest rated) shows that we have not yet bought and that there is no way to change it.

One option is to turn off the automatic preview push and manually select previews of shows you're interested in, but that means no more preview flash sales ... of course if they are always/mostly shows you're not interested in anyhow, then it may be an option you prefer.