Hello there.
I agree with Phillip Corcoran, as usually, you're better off buying a second digital camera instead of attaching lens kits. Most lens kits will not give you a good picture, and you will lose detail. If you're going for landscape photos, a phone is good enough, but for more than that, you are better off getting a cheap, but quality camera.
It's hard to know what exactly the best camera you might want. It depends on your use and price range. And each brand has it's advantages. I suggest you go through multiple reviews and compare:
http/www.pcmag.com/reviews/digital-cameras
If ou want portability, take a compact one. If you want bird photos with ease, take a Point and Shoot with a good zoom.
I personally use a HS50EXR with 42x manual zoom and it does wonders for birds, etc. But I also have a small waterproof 2009 Panasonic that takes great pictures of landscapes and all, and has a zoom at least, for rainy days. For each situation, the camera can excel where the other doesn't.
Just think hard about what use you want to use it for, and get the one which fits your needs. ^-^