I'd first like to clarify that fasting did not harm your health, perhaps improper fasting did.
Fasting can cause problems to surface while they are being repaired, and this can seem like fasting has harmed oneself.
You may try some extended juice fasting, so that your intestinal tract is active, but not working that hard. This may help your digestive issues.
Your aesthetic diet isn't necessarily helping you. There's nothing wrong with meat if it is organically grown. In fact, grass-fed beef has more omegas than fish. Also, there are some nutrients in vegetables that are only available after being cooked.
I know many people who are in their 90's, and non of them had a raw-food diet.