Venison is very like beef so depends on the cut, I use loin for frying/grilling. I like it medium rare, marinade it in a splash of red wine, crushed garlic, dash of soy or Worcestershire sauce and if you have some fresh herbs throw them in, small squeeze of lemon, salt & pepper
Get your grill red hot so that it sears your steak quickly, venison goes tough quickly so has to be cooked high and fast. Take out of the marinade and drain but don’t dry, brush your grill with ghee to stop it sticking 3 minute’s either side for med rare, 4minutes for medium and 5- 6 for well done - though I wouldn’t recommend well done as it can get tough. Let it rest for 4- 5 minutes before serving
It’s a very lean meat so maybe make a sauce or flavoured butter to melt on it to up the fats for satiety. I like a chilli and garlic butter.