Welcome back
And glad to hear that my builds were of use
Unfortunately the Bysmiel Trinkets set is kind of hard to get due to the RNG nature and lack of crafting option, yes.
For SR, Veteran won’t help, but switching to Elite/Ultimate will increase legendary item drop rate. But it also comes with increased challenge, so not sure if efficiency wise it would be better.
Since you mentioned Beastcaller, this might be an option if you have the blueprint for the helm and can make and transmute to get the entire set that way - Sanguine Lupus - Pet Conjurer
As for RNg gods… best I can do is offer to come and eat any ice cream you may or may not have in your fridge…