Stir-fries are easy to make. It's the least time consuming thing to make in my opinion. I usually stock my house with soy sauce, fish sauce and some sort of oil. So, to make a yummy delicious stir fry. I would brown some garlic and/or ginger (basically some spices, if you're daring throw in some curry at the end), then brown the meat (if desired) throw in some sort of vegetables, add some salt, a little bit of sugar, finish it off with a little fish sauce or soy sauce. It should be yummy.
Stir-fry is the first thing I've ever actually learn how to make. Experiment with different things like garlic or ginger or sesame or a combination. Add lemon or lime to add some zest into it. Cook with different type of oil like peanut oil, sesame oil, or coconut oil, etc. For taste and flavor you would want. As for hoisin sauce, oyster sauce, and teriyaki sauce. I rarely use them. Unless, I specifically want that specific taste. But it's really up to you.
It's all about creativity really. Good luck.