To expand on KVB's post. The issue may not be the camera but the lens. Older EF-S lenses cannot be manually focused if the switch is set to AF. Attempting to do so causes the zooming mechanism to be dislocated, resulting in the lens not focusing.
So, please do advise if this is impacting a single lens or more than one, and what lens(es) they are.
Are you talking about the kit lens or do all lenses not AF. Most versions of the EF-S 18-55mm kit lenses can't be manually focused when set to AF. Unless the lens name description says "STM".
Here is the trick. Do this gently.
Take the lens off of your camera.
Put the lens in MF mode.
Twist the FOCUS ring (the tip of the lens) all the way to one side (extend it). You may hear a click noise or two, this is good, but don't FORCE the lens.
Twist the FOCUS ring all the way to the opposite side (retract it). Again, you may hear a couple of clicking noises. What we hope is happening is the focusing motor being put back into its proper place.
Put the lens back on the camera.
Put the lens in AF mode.
Turn the camera on. Put the camera in AUTO or P mode.
Take a test photo.
07/31/2023: New firmware updates are available.
05/31/2023: New firmware updates are available.
05/18/2023: New firmware updates are available.
04/20/2023: New firmware version 1.4.1 is available for EOS R3
03/30/2023: New firmware updates are available.
2/07/2023: New product announcements!EOS R8 EOS R50RF-S55-210mm F5-7.1 IS STMRF24-50mm F4.5-6.3 IS STMRF15-30mm F4.5-6.3 IS STM