I'm mooning over those avocados right now! 😍
With regards the citrus trees, it may just be a case of waiting it out. When we moved into our house, there was what I thought was a little bush. It grew for a few more years before my mum said to me one day, "I didn't know you had an orange tree!" Well, neither did I. It turned out that there was indeed an orange on that little bush. It took a few more years again before I got any more than a couple of oranges on it too.