Why did my internet speed drop on my macbook 2019?

Question

macOS

I noticed a couple of days ago that the Internet speed was bad, I thought maybe there were problems with the provider, but I noticed that on the PC through Wi-Fi, the speed is normal on the phone. I checked the speed on the site, on the phone from the same Wi-Fi 50-60 megabits, and on the poppy 5-8 megabits, tell me what happened to my laptop.