Hi @diana271, welcome to the forum 
I’d recommend reading the “camera” section of this post, and taking a look at the various options in the comparison table it links to.
If you have particular follow-up questions after doing that then feel free to ask them.
There have been several discussions in the forum about cameras before, so when making a new discussion post it’s best to first see what has already been covered, then either present a new opinion, or ask for clarification on specific parts you’re interested in and/or don’t understand