Unlucky Little Alchemist

You can't do anything, and you can't eat anything without any leftovers! It's not that I don't work hard enough, it's just that I'm not capable! I thought that I was the protagonist of the novel. Even if there was no cheating, killing gods and demons, I should be extremely talented and could do whatever I learned! However, this body really can't do it! Practicing gas leakage, absorbing it and leaking it at the same time! The sword he was practicing actually flew around, and that was all, he stabbed the master in the butt in full view of everyone! I am born with a strong heart, so I can make elixirs, right? Then he took his own elixir and was poisoned every three days! No, what kind of talent is needed to cultivate immortality? My talents are destined to be useful, and mice are born to be able to dig holes! I don't believe it! I try hard to stick to one thing, but can I still do it?