I'm getting into photography and got myself a used Canon 1200D with a Tamron 18-200mm lens. And currently under no circumstance I am able to make a perfectly focused sharp and detailed photo. Or at least such in the middle of the photo.

As I'm researching now, it seems to me that to make decent photos I need at least a US$1000 camera. That's not very inspiring xD

This is not duplicate of Why are my photos not crisp?. This question is only about equipment, camera and lenes.

Edit: The lens is the Tamron 18-200 , sorry for the typo.