Imagick and Loopback Health Errors

I fixed a couple of errors reported in site help, but at least two remain. One says that imagick is not installed or is disabled. The other could not complete a loopback request. Searching the forums, I that the issue lies with my ISP, whom I contacted. It basically says these features aren’t supported. But details and questions.

For the first, it says this:

We have ImageMagick binaries. But it is not compiled to PHP so IMAGICK won’t work. So, you will not be able to use IMAGICK as a PHP built-in class. This is the reason, you are getting a message as imagick is not installed in WordPress Dashboard.

You have to use the alternative ‘convert’ utility:

and then it gives some code. But, (1) where would I insert the code? In what file? (2) One line gives a location, $location=’/usr/local/bin/convert’;, but the ISP says that the location will vary depending on which binary I need to use (and it gives the alternative) /usr/bin/resize. How do I know which one? (3) Is this even necessary? Can I just ignore the Site Health message?

For the other, the ISP says this:

I’m afraid HTTP Loopback Connections is not supported on our shared server. This is the reason you are getting a warning message in Site Health Status. If your theme/plugin does not work without a Loopback request, then you can try by changing theme/plugin Or consider for a VPS hosting plan where the Loopback request is supported.

(4) Again, big question is whether just to ignore this. I’m not aware of a failed theme or plugin. And (5) If I can ignore this, can I somehow just kill the Site Health alert? Thank you!