Its not rocket science. Your posture already indicates that you are antagonistic to the idea so why bother any more?
On the other hand, if one really does have interest it is completely simple. There are no nutritional difficulties, fruit and veg are the healthiest foodstuffs on the planet, no added nonsense. The thing is you are led by misinformation from so-called experts, who have been trained by other so-called experts and none of them have the slightest interest in being vegan, so obviously they are not gonna publicise anything positive, rather on the contrary. Not to mention receiving funding from the dairy, meat, egg industries to name a few.
So in this scenario for people like you who are most likely to be very strongly influenced by such misinformed, paid-off so-called experts, any budding interest in the subject is likely to die off quickly. Like I said, if you really do have an interest, watch the vloggers I mentioned above. Ryan and Freelee are always showing off their blood test results, they are by far the best results imaginable and they are the healthiest people on the planet, contrary to popular belief like yours. And that comes from just a simple, straightforward vegan diet: no meat, fish or eggs, no dairy, no honey, no animal products basically and that is it. But hey, I'm not here to argue with you or try to convince you, its your life, do what you want. If you wanna go to hell the door is open.