We are all different in how we react to fruit so testing after eating your fruit will tell you how your reaction to fruit, no one else’s. I’m a keto lifestyle but I do still eat certain fruits, always as part of a meal though. I can do raspberries, strawberries, a few blueberries with cream or full fat Greek yogurt after a meal. I can eat a small amount of apple incorporated into a meal, tonight I’m planning a steak with salad & homemade Waldorf salad with about 1/4 apple, celery, walnuts & mayo. I can also have apple in a celeriac remoulade, I can eat a finger of pineapple after a meal or used in a marinade for meat or to make sweet & sour sauce. I can eat 1/4 of a small orange or a small satsuma or a not too sweet plum
What I’m trying to say is others may not be able to eat these fruits but I can & do as long as I don’t eat them in isolation & stick to my very low carb count of less than 20g carb a day, it’s all very individual and you may or may not be able to tolerate fruits, you’ll only know if you test
I agree with laying off the grapefruit if you are on statins, at least until you double check with your GP or pharmacist (I find pharmacists more knowledgeable with drug interactions)