well thank you for helping me out getting some clarity about the issue.
do you mind sharing the link to the other person with this issue?

the only reason i came to lightning is to save on fees and now i will have to pay a much higher amount than on any on-chain transaction
first and last time i'm using lightning.

Does this mean if i close the channel i will have to pay a ridiculous fee for the transaction? that would be about 42€ as of now.

I have sent you a message with the Node ID.
If i close the channel, will i get the total capacity minus transaction fees back to my wallet?

edit: since i reached the limit for private messages, i'm replying here.

        "local_balance": 200000,
        "local_reserve": 2000,

would that not mean 1% is reserved and not 10% (198000 sat)? Its the same in your image. I dont see the correlation to the "can send" amount.

I'm using the latest 4.12 version. 3 restarts so far and no change.

its pretty much the same as your image from first post, except for the significantly lower "can send". Capacity is the minium amount with 0.002 btc. Remote Node ID from suggested peer.
I would like to not share an image due to privacy reasons.
Since i'm new to Lightning, does this mean the 42% is not usable in this state or does it change once i make a transaction?

i just opened my fist lightning channel using this guide.
Does anyone know why the amount of "Can send" is only 58% of the Capacity of the channel?
Whats up with the other 42%? Can i not use them at all?