Whatever gun you're shooting, it's really all about practice practice practice. I don't profess to be a marksman but I know when I made a bad shot and typically can anticipate "where that last round went". Focus on consistency in the sight picture, grip/support and stance, pull smoothly & firmly on the trigger and don't forget the follow through.
The Sig SP2022 is a great budget option that nobody seems to consider/know about. The trigger feel is VERY nice (I feel it's on par with the P226 that I used to carry in the military) and it usually around $550 new, $400+ used. Poly frame, much like a Glock. Much nicer than the Sig P250 - that DAO trigger on the P250. I bought it (used - because you can't really kill a Sig) because it felt really great in my hand, and I had compared Glocks, S&W M&Ps, and the XD/XDm handguns I held.