The problem with healthy eating is that you get five opinions when you ask two experts.
However, you can't find a ton of videos on YouTube with plausible sounding explanations why a plant-based diet is healthiest. Just watch those and decide to believe them. Whatever you do, do not read "The Plant Paradox". That book will ruin eating for you if you even so much as consider to ponder the possibility that it might not be total BS.