im trying to make lore for a original species so any feed back helps.

LORE

in a far off galaxy lived a species that hand colonize all planets in there galaxy. the planet closes to there sun and the planet at the edge of there galaxy was used for research incase something went wrong they can just destroy it. one day a rough wave of unknow dark matter hit there sun doing it into a dark matter sun. the rays this new black sun send out killed about 98% of all life in the galaxy. the 2% that lived was fures with dark matter and change in some way.

(name) was on the last planet to get hit. his body and soul was fuse with the dark matter but sadly everyone else on the planet die leaving him alone on the planet. as he try to find a way off the planet trying to learn the technology he never used he start to find out he can use dark matter to make anything he knows how to work and power it with dark energy. after years of being alone he started to go made tell he snap and spilt his being into other selfs using his power.