What's Wrong with Traveling Through Another World to Eat and Wait to Die?

I accidentally arrived in another world, Zhang Jianye, I want to change my name, I want to eat and drink, I want to play with my little sister until the Big Bang, I want to be the protagonist, I want to have a harem, I want to be invincible, why can't I get anything, I want to eat and drink, I was caught on the spot, my sister ran away with my brother, my brother showed off better than me, and there are weird nymphos following me, and every time I become someone else's stepping stone, I don't accept it, I will never give in. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.