Apps that allows me monitor a website and send pop up notifications

Hi pls I have tried anytracker(paid for the platinum plan), webalert(paid for the pro version I.e webalertxp which was saying an error with the expansion pack so I couldn't use it) but they didn't work the anytracker works on text and numbers. And the website I want to watch is more of like a bar chat that keeps on changing colours. I initially paid for the pro of the above apps because they do check for updates in the website every 1 minute not like other websites or apps including the pro version that has as low as 5 minutes. Pls I would appreciate if anyone that recommend to me any app or anything that can allow me to check updates on a website as low as 1 minute and send pop up notifications as soon there's a change or update in the website, I even tried using termux app to monitor the website and send pop up with the help of Ai using coding but it didn't work