The Refuseal

"Refuse" as a noun means "garbage."

I refuse from maybe interesting, in general, a proposal, butd a proposal that may have been interesting to me, but also would have been so exhausting for me.

Therefore I think that the world can copye with this thing without me.

I think this is what you mean.

That’s fun because I usually like such tasks, and I really love challenge myself.

I'm not sure how "That's fun because" fits in here.

But, my resources are not infinite, so I need to have priorities and keep it.

The "and maintain a reserve of my resources" that you meant by "and keep it" is implied.

If you had written "however" instead of "but", then you would have had a comma.

Do you know that early the word “priority” can to use only to a single number?

I'm not sure what you mean by this.