You can send to any and all addresses using electrum. Other wallets and websites don't usually support the segwit addresses that electrum creates i.e. bech32 addresses. So you will have difficulty withdrawing money from exchanges, receiving money from other bitcoin users and so on. You can send to anyone though.
If you want to create a segwit electrum wallet then follow
this guide except that when you are asked to choose between standard and segwit you elect segwit. Then simply
grab a receiving address,
switch to your current wallet file and send your coins to the segwit wallet's address.
So, i can't use Bread to send to my new segwit electrum address, but i can use the same 12 words on electrum to send to a new electrum segwit address?
Seems like a matter of software only, right?