I've dealt with wobbly tripods on uneven outdoor spots before & and it can ruin a good landscape shot... One thing that helped me was to always level the bubble if your setup has one and but beyond that, I dig small divots in the dirt for each leg to sit in. Gives it a firmer base. Especially on grass or soft ground. Works great.
If wind is the main culprit,, I try shooting during calmer times of day, like early morning, which cuts down on the shaking too. Saved a few sessions that way.
