Guidance for App Subscription campaign on fb

Hello,
Hey guys, I need some help

I’m trying to run a Facebook campaign for an OTT app subscription and I’m a bit confused about the best setup.

If anyone has experience running App Subscription campaigns on FB, I’d really appreciate your guidance on:
1. How should I set up the campaign ( which objective is best to choose)?
2. What keywords should I use to spy on OTT ads?
3. Which SPY TOOL is best for OTT apps?
4. Any tips for creatives or funnels?

If you’ve run OTT or app subscription ads before, any best practices or mistakes to avoid would help a lot

Thanks in advance to anyone who replies!