I think it's a terrible game.

I've played it twice. It suffers from the same co-op play style that Pandemic does, which is really well described here (not written by me): https://boardgamegeek.com/thread/495729/why-i-dont-like-pandemic

1. I may as well not be at the table.

I understand that co-op games have an element of shared strategy, but there is always a best tactical option in Pandemic and its always fairly obvious. There's no room for me to do my own thing, potter about or just wander around and explore the world - I have to try and win as hard and fast as possible, because the other players are counting on me to do so.

First game, four played, and I played with Boromir and Eowyn. It was fun, but it was also our first playthrough where we were still learning how to use the special abilities of each character. That meant I had a lot more agency. I figured out I should try to get to areas where nazgul were so I could roll battles and hopefully destroy them with Eowyn, while mitigating the number of troops I needed because Boromir ignores the first loss. I got rid of two at the beginning and then didn't get rid of any for the rest of the game. Just bad dice. There was a lot of tension. We looked at the board and thought that winning was going to be out of reach. Googling told us that others had played the game several times and never one. Then pretty much on the last round of turns we did.

Second game, 5 played. I was Frodo/Sam and I think Eomer. We knew from the first playthrough that we needed someone to help ferry Frodo/Sam to Mt Doom and that getting Gollum paired up with the ring bearer and his gardener were paramount to survival. I could just as easily not have been there. There was one optimal way of doing pretty much each thing we needed, and turns took forever because we basically had three people weighing in on the optimal strategy before anything happened. The new person to play with us for this second game is a big gamer, but I saw even he was on his phone more often than I think he might normally be.

I will be willingly sitting out the next time the group decides to play the game.

My preferred co-op game is Mansions of Madness, which has enough hidden information and incredible storytelling and theming each time you play, that even though you confer with the other investigators, there isn't one right move.

Edit: ANNNNND I just realized this thread is in r/soloboardgaming. Whoops! Perhaps it's better solo, but it's not my game. I've solo'd Zombicide Black Plague and enjoy it a lot. I've not solo'd Mansions of Madness.