Cope with disadvantages:-
Some tips that you can follow to cope with the disadvantages of veganism are that you should start taking supplements for the nutrient deficiencies, ask your nutritionist to include nutrient rich foods in your diet, speak to your doctor about prebiotics/probiotics, enzymes, etc., that can help you digest the nutrients easily.
Now the question is one should become a vegan or not ???
The choice can be made looking at the pros and cons , and the approach will be individualized, because there is a lot to consider. You can’t avoid the cons, but nutrient deficiencies can be coped with diet and supplementation.