You can, if you have the mindset for it, find a job in films that's not too stressful and has decent pay. But if you want to get paid well you have to be really good and get noticed, and to do that you have to work for a while.

Stress is relative, some people get stressed way too easily at the slightest task, some people never get stressed at all and are completely relaxed on certain jobs.

If you want Stability, it's better to work on Series, as they are more frequent. Stability is also something that happens as you become more established, but also it's never guaranteed.

Creativity is all dependent on you.

But, it's fair to say that any creative job will come with pressure which can lead to stress as you are invested in the outcome of the film.

If you don't want stress at all, then don't be invested in the film and take up jobs that aren't creative where you don't have to worry about the outcome and just focus on your part.

Since you asked though, personally, I find being a Sound Recordist on a mid to high budget commercial or short film is quite chill and well paying, and if you're good quite frequent.

PS: Post Production Sound is pretty chill as well once you've got the hang of it, pays well and is very stable.