What exact type of magnifying glass should I get

Some smartphones are so good now that you can take a pic and then zoom in to see the trichomes up close. Or you can get a handheld microscope like this one: https://amzn.to/31Ta19m

😆 I have to set the phone down and steady the microscope with both hands.

I have a WiFi microscope. I can zoom in and take pictures with my phone.