How can I fix the unresponsive keys on my MacBook Air?

Macbook Air 2020 core i5 sonoma 14.5

suddenly certain keys on my MacBook Air are not working or producing weird results. Specifically all the curse of keys are not working. Delete only deletes in front. AECHM all acting like shortcuts for certain windows, like emojis or launchpad. I’ve tried everything resetting ram, I’ve checked all keyboard shortcuts no slow keys no sticky keys. Sometimes some of the keys work but mostly no. desperate for some help. I’ve also cleaned all the keys.

Any help or ideas would gratefully be received. Many thanks.

[Re-Titled by Moderator]