Please help me with an opinion on my first motorcycle(a2)

So right now, I am very conflicted and don’t know what to buy! I was thinking about a used Ninja 650 that is A2 restricted, a used Ninja 400, a new CFMOTO 450 SR, or a new Ninja 500 SE (which is out of my budget, but I could make it work). I don’t know what to choose or what I want from it — whether to keep it or upgrade to an A license bike after 2 years! I would apreciate your help!