The main one is your peculiar take on free will which you oddly restrict to only a limited time point
You can only accept the gospel when and while God is offering it. People aren't born called. Somewhere along the path of life God calls a person to the gospel and opens the door to salvation. Until He does that you can't be saved. You will be, and remain, the hardened soil on which the seed of the gospel can not penetrate and take root and grow and which will eventually be snatched away by the evil one. God is the farmer. He tills the soil and plants and waters the seed. And until he does that you got nothing and you never will.
...and then it’s removed again.
If you reject Christ over and over and over again when he calls, eventually God stops calling and turns you over to your choice to not receive and believe the gospel. Then you will never be able to believe the gospel and be saved. God stops working your soil. Think very hard about what scripture says about this before you insist this isn't true.
You specifically say we are like rats in a maze where God is (my words but accurate) manipulating everything.
If God did not arrange things so you can hear the gospel and prepare the soil of your heart to receive it you would never be saved.
The Being you present is cruel. Being manipulated rats in a maze is a very cruel just like the Calvinists version of God. Your description of Him matches the Calvinists’ description.
Calvinism says God doesn't consult you to see if you want to be a believer, and that he decided that
for you, apart from any consideration of what you might want ahead of time in eternity past before you or anything else was created. And that by default he decided
for you if you're going to be an unbeliever by simply deciding ahead of time that he's not going to make you a believer.
That's how Calvinism (erroneously) defines 'predestination'. It says God has already
predetermined ahead of time if you're going to be created to be a believer, or not created to be a believer, completely separate from any consideration of what you might actually want to be, and there's nothing you can do about it. Calvinism says it has to be this way or else salvation becomes a works gospel, as if you being able to decide whether or not you want to believe constitutes the 'work' that can not justify a person. I don't believe that. I believe that God gives us the choice of whether or not to receive and retain the seed sown in us by the Holy Spirit.