I get these ads/messages that pop in from the lower right side of my computer

[CentralMass]

4. When you visit some sites you may get a pop up that asks you if will accept notifications from this

website. If you click allow you are likely to get those pop notifications.
"
In chrome, to kill them.

"How to control notification pop-up windows.

Click on the menu icon (three stacked dots) on the top-right of the Chrome screen.
Click “Settings”.
Scroll to the bottom and click “Advanced”.

In the Privacy and Security section, scroll down and click “Content Settings”.
Click “Notifications”.
At the top of the page, there’s a toggle that’s set to “Ask before sending (recommended)”. Flip the toggle to “Blocked” to stop the pop-up windows. Below the toggle is “Block” and “Allow” lists. The entries in these lists override the toggle. If you want to get notifications from a website, add it’s URL to the “Allow” list."