Eth and weth in metamask

Hi. I mining eth, and send it to my metamask by L2Poligon (matic) method. i see that transaction isgood, but i dont know what i must do to see my weth in metamask. Please help me. Sorry for my poor English.

And say me please
what i must do to convert weth to eth.

and now how i can convert weth to eth? or how i can send weth from poligon nethwort to main ethereum nethwork?

Can You give me advice about brige? Where i canfind it?