You need yo cast into channels so that your posts are seen. When you just cast it, the only people who see it are the ones that followed you unless you cast in a channel. Some channels you have to be invited to be a member and there are others you can just follow.

I am traditional  & NFT artist who conveys peace & tranquility through both detailed and abstract works of creation.🎨 ✝️ https://linktr.ee/brooksgallery

there is a darkfarms one but there is really no activity in there. Try artfrens, & cryptoart