1. Preparing your Waystones
The Fragment Droprates on the Citadel Boss are increased by the Waystone Droprate on the Map. So we want as much Waystone Droprate on our Waystones as possible.
Preparing Waystones is super simple. We want a Waystone with 110-120% Increased Waystone Droprate. Here is a Tradelink to buy those of the Market: https://www.pathofexile.com/trade2/search/poe2/Rise%20of%20the%20Abyssal/3qnrwQkGh5
You can however also just use your crafted 6-Mod Waystones. Here is a Regex on how to find these Waystones in your stash: "waystone drop chance: \+(110|115|120)"
Once you have your Waystones, instill them with 3 times "Liquid Envy" to get to 205-215% Waystone Dropchance.
Your Waystones are now ready to go.
2. Tablets You Need
2.1 Magic Tablets with Waystone Dropchance
You need 3 Tablets with at least 45% Increased Waystone Dropchance. You can buy those of the Market by using the following Link: https://www.pathofexile.com/trade2/search/poe2/Rise%20of%20the%20Abyssal/nrwkMMPvu0
2.2 Visions of Paradise Unique Tablet (Optional)
This Tablet allows you to run a Citadel Twice. Just put it in along with 2 Magic Increased Waystone Quantity Tablets when you run the Citadel the first time.
At the current Market, this will always be a Profit!
Trade Link for the Tablet: https://www.pathofexile.com/trade2/search/poe2/Rise%20of%20the%20Abyssal/MR9rr2DhJ
2.3 The Grand Project Unique Tablet
I highliy recommend to use the Grand Project on every Tower. It will make your Atlas Progress much faster and also allows you to chose the Maps you want to run instead of having to run many "Traversal" Maps.
Trade Link for the Tablet: https://www.pathofexile.com/trade2/search/poe2/Rise%20of%20the%20Abyssal/9lmvyaRCK
3. Atlas Tree
You need to Adjust your Atlas Tree to grab all Waystone Dropchance, Increased Precursor Tablet and Increased Waystone Modifier effect possible.
Here is a Link to the Atlas Tree: https://mobalytics.gg/poe-2/profile/goldfarmingguide/builds/citadel-farming-atlas-tree-by-goldfarmingguide
Since this Tree is not optimal for regular Mapping, I recommend to clear Access to like 5-10 Citadels, then respect your Atlas, then bulk run all the Citadels and then spec the Atlas back to your regular Mapping Setup.
4. Running Citadels
We can run every Citadel twice!
The first time, we Run the Citadel, we want to put in Visions of Paradise and two Magic Tablets with Waystone Quantity.
After completing the Citadel, we can run it again using Three Magic Tablets with Waystone Quantity.
If you use the correct Waystone, this will ALWAYS guarantee your to drop 2-3 Fragments being worth between 1.3 and 2 Divines at the current market.