One does not base a conclusion on the experience of one person. One looks at the overall evidence of millions of people and draws conclusions from that.

The evidence is that vegetarians have a different set of health issues - greater number of strokes and more mental illness.

https://onlinelibrary.wiley.com/doi/10.1111/nbu.12540#:~:text=

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3466124/

https://nutritionfacts.org/video/update-on-vegetarian-stroke-risk/#

Vegans and vegetarians aren't healthier - they just have different health issues.