Orthodox to secular to Reconfusadoxative… When you pray, how important is your kavanah and your emotional state to you?

So Judaism asks Jewish people to pray certain prayers at certain times.. when you’re not “feeling spiritual,” or can’t really focus on the solemnity of what you’re saying, do you experience that as a problem?

Or is it just an added benefit to you if you do have a positive inner experience of closeness to Hashem, your traditions, and Torah while fulfilling a mitzvot?

If you’re in a negative emotional state will you delay or skip praying? Are there rules about not praying when you’re angry/sad etc

Thanks to all in advance, and extra thanks to our mods who keep this very unique and IMO important place friendly and on topic.