my iphone se first generation shows me i need to connect my phone to the pc to restore,but when i follow the steps it still not working. to

At this point, if you followed the steps, everything that you are telling us indicates that there has been a hardware failure on your phone and it will need to be serviced at an authorized Apple service shop.

What did Apple Support say when you contacted them?

Did you try to follow the steps mentioned in this article, to connect your iPhone in Recovery mode?

If you can't update or restore your iPhone or iPod touch - Apple Support

Make sure to use the original Apple USB cable.

Can you try another computer?