Yes—this is a common handheld issue, and the main fixes are technique plus visual aids.

Practice helps a lot once you start consciously checking for tilt on every shot. A ruled/grid viewfinder screen can make it much easier to align horizons and verticals than relying on AF points alone.

Your handling may also be contributing: some photographers tilt the camera slightly while pressing the shutter. Try slowing your breathing and gently squeezing the shutter instead of jabbing or pushing down hard.

For extra support, a simple stabilizing aid can help, such as a string “monopod” attached to the tripod socket and held taut under your foot.

Some cameras also offer an electronic level or tilt gauge in the viewfinder, and a few models can even auto-correct small tilt. If your camera has a level feature, it’s worth enabling. If a built-in level seems consistently wrong, camera calibration may be needed.

So the best approach is: use a grid or level if available, improve shutter technique, and practice checking alignment before each shot.