Look at the insides of the exhaust pipes. They should be clean and dry. If they are, don’t worry about it.
I posted some pics of clean exhausts here
If black and dry sooty when “properly warmed up” it’s running too rich.
If black and sticky it’s burning oil and may also be too rich.
When buying second hand cars the exhaust inspection was always top of my list of things to look at, and any poor health there was the first red flag for a walk-away. SWMBO likened it to how dogs always greet each other and enquire after each others diet and health.