I just don't understand anyone's logic in this game at all. What a really odd season

Since James won the POV and Sharon has thrown herself on the sword of Josh, the plan is to get rid of Chelsia. The problem with that now is, Nat is overthinking things since Chelsia told her she was going to sleep (nice way of putting it) with Matty whilst she's there. Outwardly she's saying that Matty thinks she's fat and ugly, but after dwelling on it for a while, she's getting nervous. So then what's your other option Nat? Voting out Sharon? the one that Matty made out with a few times? She's going to stress herself into high blood pressure LOL
Then we have all of the housemates pretending to either not be a couple (James and Chelsia), or not like each other (Ryan/Sheila, Adam/Sheila, Ryan/Sharon, Josh/Adam, Josh/Ryan, Nat/Sharon Oh Lordy, I can't keep up LOL
So they've been saying that they really need HOH next week to get James out. Even Sharon has been in on these discussions and agrees. Takes Josh out to the hot tub to tell him this and now Josh is trying to convince Sharon to keep James in as he's the bigger target and no one will go after Josh then. I don't believe any of them possess the logic gene at all LOL
In the meantime, Chelsia has been ticking Nat and Sheila off by talking about Matty's eye 'disability' LOL. She's telling everyone that she told Nat that she would 'f**k Matty and she wouldn't know which t*t he was looking at' I've never seen such a childish bunch of houseguests. It's like being back in high school again. It's halfway through and I still have no favourite to win. A very sad season indeed