If you want to try Bone Mages but don't want to push super high, I recommend the Locran's / Tibault's / Torment version for simplicity.
I've tried a lot of variations on the Bone Mage theme, including the powerful-but-tricky Blood-Mad Idol / 3pc Waking Touch combo. That one relies on a frankly bugged interaction, but it's clearly the highest DPS version, and it will top the leaderboards. (Last Tower "season", I piloted that version to Rank 30 in SSF with a Tier 127 clear, and I also cracked Pit 130. Not the best, but just mentioning it to calibrate expectations.)
The problem? It's pretty damn frustrating and is highly dependent on enemies that behave themselves, like bosses with normal attacks instead of one-shot-or-nothing mechanics.
I tried several variations that don't rely on that interaction, and they're all less powerful, which is to be expected. However, the version I settled on that is only about 1-2 Pit tiers lower (I cracked Pit 129 with some fishing) uses Locran's Talisman for DPS, and the combo of Tibault's Will and Torment aspect for essence generation. Yes, you're losing two DPS slots by taking Tibault's and replacing a ring Aspect. However, you can ALWAYS be maxed out on full-Essence Bone Mages. This includes against bosses, and versions that rely on Lucky Hit Essence Gen (edit: like the u/devindran version discussed here) will always struggle vs single targets. I've found that it's fine to lose 2x damage on paper if you always have full Mages that were all summoned on full Essence. I'll also note that this version is much tankier because all Bone Mage builds rely on PocQue for Barrier, and it triggers when you spend 100% of your max Essence three times. Doing this is way more consistent on the Tibault's / Torment version.
Honestly, the only hassle with this version of the build is it gets a little repetitive to repeatedly summon Mages, but this is what makes it consistent.
Others may have had a different experience, so by no means do I think this is THE way to go with easier Bone mages, but I spent a couple days trying to optimize it, and this is the version I plan to run going forward. It's fun to play "Please just touch me but don't kill me" with the Blood-Mad / Waking Touch combo every now and then, but its inconsistency was driving me nuts. This version is much less rage-inducing, IMO.
Build planner: https://maxroll.gg/d4/planner/cv2fq50x
There are things to tweak in here based on your preferences. Try Blood Bone Prison, different Glyphs, skill tweaks here and there, Runes, gems; the only things that I think are set in stone for this version are Torment, Tibault's, Trag'Oul, and the usual stuff that you'll find on all Bone Mage builds.