Scared to achieve a dream of mine

Here you would need a special permit to do so. Maybe you should ask if it's legal to do it without a certificate first?

One of my concerns when it comes to selling food is being able to sell it immediately before the food becomes bad. Because if you are unable to sell prepared food right away, then your capital will go to waste, won't it? Still I see some people on Facebook who sell food. Some prepare the food first, then sell them, enticing people to order whatever is available. But that would probably work better if you are already known and you can expect that people will order what you have already cooked. Some ask for orders (sometimes bulk orders) so they will only prepare the amount food that already has sure buyers. Perhaps that could be something you can consider. Of course, for people to order food from you in the first place, they should know what your selection of foods are. So probably the first step is to, for instance, take pictures of the food stuffs you make, post them on social media, and ask your friends and family who have tried them to like, share, and comment their reviews. And let people know on social media that you are accepting orders. This way, perhaps your friends' friends will consider ordering from you. Also, don't forget to invite your neighbors to become your friends on social media so that they will easily see your posts and your friends' reviews. These neighbors can be some of your first customers. Invite them to review your food as well, so perhaps their friends and family will want to try. This way, hopefully, your business can start to spread by word of mouth. Good luck!

Maybe you should master making the food first..Commerce can always come later.

maybe you can have someone you trust and cares for you do the marketing, order taking and delivery for you. or you can have a setup with someone who already has a store/shop/stall/food stand.

Master your cooking first, then your food will speak for itself.

Eat what you cook yourself for a month and then invite your friends for a lunch and I'm sure they'll love it since you are already an experienced Vegan cook ;)

Well as long as you do not poison people, should be fine. People love food and like my dog will eat anything. Hast to be tasty though also. I do not care if it is bad, healthy, but if does not taste good, not eating it.

Hopefully, one day you can start small and achieve your dream.