Hello and welcome to Apple Support Communities, ezparz!
I understand that when you use Siri, what is written on your screen does not completely match your request. I'd be happy to provide information to help you troubleshoot this feature.
Give the steps in the following article a try: If Siri or "Hey Siri" isn't working
"Check your microphones
If Siri doesn't hear you correctly or doesn’t respond when you ask a question, make sure your microphones are working:
On your iPhone, iPad, or iPod touch, remove screen protectors, films, or cases that cover the microphones, then ask Siri a question. If Siri doesn't respond, connect a headset with a microphone, like EarPods or AirPods, then ask Siri a question and see if Siri responds.
On your Mac, go to Apple () menu > System Preferences > Sound > Input and select a mic and check the input levels.
If Siri still doesn't work, contact Apple Support."
Cases or film screen protectors may interfere with Siri. If this is not the case, and the issue persists, reach out to Apple Support for further assistance.
I hope this information helps you resolve the issue with Siri.
Have a great day!