SD card corruption is a big problem with the Pi, but its easily solved: enable the read-only overlay for your boot/root filesystems. This is built into the RPI OS. start raspi-config, and go into performance options.

Every month or two, disable the overlay (again using raspi-config), reboot, apply updates, re-enable the overlay, and you are good to go.

Also, if you are using a PI4, switch to booting from a USB stick and just forget about the SDcard.