Eternal Soldier is free.
Download and play this ETERNAL SOLDIER STARTER CAMPAIGN: 2 challenging missions that you can play 4 vs 1 or solo. Choose Harec or 4 other Raiders and help them rescue the legendary Lycus Dion from the claws of the Hades Division, or switch sides and play as an Antagonist.
^What's misleading about their description of the free base game? You use the word "free" so much in your post, I don't think you understand what is being given away free at all. You have access to a vast majority of the game, for free.
The campaigns and additional missions are not, but they CAN still be played "for free" if you want to. So even that access is included in the free game.
i'm suppose to go add strangers to play the game and rely on them
It's just a suggestion. It is a co-op game, after all, so whether you make friends and play together or play with random people, you will be relying on them. You can play solo, but there's not much to do there.
people came in and made terrible opinions that "this is there way to make money"
I mean.... they made a product, and are selling it. Making games isn't a charity, they have to make money or the game will cease. Do you understand this concept?
you probably already wasted your money for content that should of probably had been free
I paid the devs for game content. I paid for a product and service, like I do all products or services. Just like I paid for Fallout 4, or Deus Ex, or anything else. Runescape is like the cornerstone of f2p gaming, and a vast majority of it is indeed "locked behind a paywall".
I'm not sure you understand that gaming content costs money to develop, and devs have to make that money somewhere...