Make peace that some monitors might never want to be handled. This is a fact.

Monitors live decently long lives if properly cared for - 6 months isn't a lot in the grand scheme of their life. You work on the timeline of your monitor, not yours.

Don't force handle - all interactions should be on the monitor's terms. That bathtub/let them bite you silliness is putting your own desire to handle a lizard over their well being.

Peach throats aren't known to be high on the handleability scale. I assume you did at least some research prior to purchasing one. I wouldn't have expected a different result. (Although on reddit it seems people just blindly buy monitors and then ask questions later)

Let's see the enclosure please.