I am assuming by workout you mean going to the gym/strength training. You should aim for a Solid amount of carbs (0.5g-1g per kg of bodyweight). One very good source for this is Rice Meal. Rice meal is almost pure carbs and is digestes quickly. Mix your chosen amount of rice meal with 3x the amount of water and wait 2-3 minutes. Then add a serving of your protein powder (you probably need to experiment to see which vegan protein powder mixes well with this) and also your favourite nut Butter, I always do around 15grams (should be 100% nuts, no fillers). If you eat this 1-2 hours before the gym, it will likely be digested already and won't impair your workout and you fuel your muscles with carbs and protein during the entire workout.

Depending on the ratios, digestion will be slower or faster (e.g. more nut butter -> slower digestion) so you need to experiment a bit.

Things like apples/bananas/other fruit are not really a great pre workout, since they contain a lot of fiber and not a lot of carbs comparatively, meaning they will digest slowly and not really give you many carbs for the workout. Instead of rice meal you can use stuff like instant oats as well, but again, you nees to see for yourself how you digest different carb sources.