I have noticed that my Google assistant is getting less smart by the day. It used to understand a lot more, now it keeps playing the wrong thing or turning off

I have noticed that my Google assistant is getting less smart by the day. It used to understand a lot more, now it keeps playing the wrong thing or turning off all the lights instead of one... or it won’t stop the alarm when you say stop. It’s been getting really frustrating... I would be more upset but they pretty much give those mini speakers away any chance they get.