Non Veg in Hinduism

Let's not deny the fact or say it's mixing from invaders, Meat consumption has been mentioned in our texts from Veda, Mahabharata to Ramayan. I don't find issue thet humans consume it, but I can't understand why it is mentioned in our texts to offer it to god's, Surely bhagwan doesn't need us to kill animals for him, and we also find some verses saying we shouldn't kill animals, so why is there two versions where one says not to kill animals but many verses say to offer them in Yajnas. I am really confused