Problem transferring from Polygon to Ethereum Mainnet. I need help!

Hi, I think I screwed up by doing things without doing proper research.

So I've been mining on Ethermine for some months, and everything was going fine (each month they moved the eth that I'd mine to my Metamask automatically). A few days ago I was waiting for them to give me my eht, but nothing was happening, turns out Ethermine had changed their payout policy. I go on to read it and find that they recommended smaller miners to switch to the Polygon option. Me, without knowing what I was doing, changed the option.

I go back to Ethermine and see that I had no unpaid balance, but that it also wasn't on my Metamask wallet so I start to freak out but ended up finding it on Polygon (which I still don't fully understand what it its). I keep reading Ethermine's payout policy and find a guide to connect Metamask to Polygon (which I think was outdated because it said to name the connection "Matic Mainnet" instead of "Polygon").

Now, when using the bridge I'm trying to transfer 0.015 Eth to my wallet, but when I do the price of the estimation of the total gas required is absurd, before it was something like 84 dollars, and now it says $1444.

I need help. What do I do? Anything would be appreciated.