Galaxy S9 partly rebooting when using any Google app and others

Hello,
For about 2 weeks now my galaxy s9+ is shutting down and partially rebooting when I use primarily Google apps. It does it when I plug it in to charge as well. Very weird.
Once it reboots itself, it does not recognise the sd card, however if I force a soft reboot it then recognises the card until the next crash.
Please help, I need to be able to use Google maps