i was using google colab on my web browser and was trying to set some keyboard shortcut on google colab.

After that, my keyboard keep showing weird letters when i am typing. you can see it in this image -

I tried to solve this by going to system preferences > keyboard. then setting shortcuts and input sources to defaults. but it is not working. I tried varies other approaches from articles on the internet but still couldn't able to fix it.

can anyone help me to fix this problem?