Hi robertinjo,
Welcome to the Apple Community,
where some of us do our best to help each other troubleshoot :-)
Re: "do not disturb and silent mode"
Apple support have articles online to help you control what is possible.
Use Do Not Disturb on your iPhone, iPad, and iPod touch
https://support.apple.com/en-us/HT204321
How to put your iPhone on vibrate, ring, or silent mode
https://support.apple.com/en-us/HT208353
If you would like to see more features included:
Apple want their customers to be happy, with their products
and there's a webpage for feedback:
https://www.apple.com/feedback/
Hope this helps you :-)