Can I limit the internet speed of my laptop or a specific program?

Since I often don't feel like being asked questions in homeschooling or saying something when I'm called, I would like to pretend that the Internet is bad so that people understand me very poorly. Is there a program or something similar for this?

Be prepared to be queried then that is no problem either.

Of course you can, for example with Trickle, I use it more often.

https://wiki.ubuntuusers.de/Trickle/