Would a wooden cup/bowl be the best material to consume food and liquids from (in comparison to glass, plastic, and metal)? how would one go about purchasing a good wooden cup/bowl?

No. The value of such a plan is insignificant.

Glass, plastic or metal bowl would be better. Wood is difficult to sanitize and food residue would promote growth of bugs. For healthy diet: http://www.choosemyplate.gov/., exercise 30 minutes/day, drink enough water daily so your urine is mostly colorless, have safe sex, no tobacco alcohol weed or street drugs. Get HPV and Covid vaccines. Wish you good health!