Need more tips for making snake less afraid

[Armiyana]

If it is in a "display" sort of enclosure it might be suspected that there's a feeling of lack of security by the snake that is a compounding factor. I can't speak to BPs with much experience on this matter, but many other species really do seem to appreciate the security of a dark-ish, non-transparent enclosure (not to say that there aren't some downsides to tubs and such).

If this aspect is worth investigating, it would be useful to post photos of the enclosure (not links to Instagram, hopefully, for those of us who don't use it).

I think this is also important.
I tried to keep my first 'fancy' BP in a display enclosure. My super pastel lesser spider. It was a DISASTER. She was constantly striking at the glass when anything moved in the room. She wasn't eating. She was coiled up on the highest perch in total defense mode. Even after trying to put paper over the window, she would go back to defensive as soon as it was removed. Super defensive when taken out too. Always snapping.
We moved her to a tub and I put my burn rescue snake into the tank. The change is incredible. She is still a defensive ball. But now she will tolerate the occasional handling as a wellness check and not just go into instant defense strikes. No more bopping her nose on EVERYTHING. And she's the best feeder in my collection. The other snake is chill and just hides out most of the time. Sometimes periscopes if he's feeling adventurous. Always takes his meals.

There really is so much that can be ignored. Sometimes what we think is best for these animals or what we want these animals to be are entirely different from what they actually want. It's up to you to really put your animals needs before your own.
I really think given your posts that you want so much for your snake, but there's still so many signs that something isn't quite right. Until your animal is absolutely comfortable in the enclosure, I don't think you'll have any success in handling. If your snake is still injuring and scratching itself in the enclosure, something isn't right. You need to take baby steps and fix one thing at a time. preferable the habitat as that is where your snake will feel safest and spend the most of its days.