@Peri_Longbow_plz Wattson has a pretty defensive play style.
You know, just drop a few fences around an entrance/choke point.
Put down her ult in a place you plan to stay in, doesn’t even have to be indoors, (although it’s much more effective there).
Good idea to hold on to at least one ultimate accelerant, as it will fully charge your ult.
Her ult is good for sniping, as it will regenerate shields if you get fired back at, and can even serve as temporary cover.
She has Low Profile, so I assume she is at least somewhat hard to hit.
Camping is good, but you don’t have the same area denial as Caustic. You won’t do much damage with your traps, but if an enemy crosses them they are a sitting duck.
These are kind of obvious things, but I thought I’d mention them anyway.
Overall, Wattson seems like a good character for you to play, mainly because of her ult, but you’ll have to see for yourself.