How could I access dark energy/Matter and transfer it to a crystal to store it?
Iām afraid the answer is, you probably donāt.
This was only ever a hypothesis, and is reaching the end of itās course - theyāve been looking for dark mater/energy for over a decade, and there has been no evidence yet. They have found sources of āmissingā matter that they thought wasnāt here before. Meanwhile other evidence they hoped to find has been proven not to exist. WIMPS donāt exist, for example. Other systems ābreakā he dar mater model.
Basically there is mounting evidence that this model is defunct. Itās a pity and I rather liked it as well, but if it doesnāt work, it doesnāt work.
Having said that, you can use your mind t intend to store any kind of energy you like. Energy will flow based on your intent and something will happen. People āchargeā crystals with moonlight and incense, Iām pretty sure you can make up whatever you want.
What result are you looking for? Maybe people here can make suggestions for what worked for them.