(hey, no getting hit with a trout this time...progress)
Damn it..it is so hard to resist..
If you need a SW address starting with btc1, don't expect an uneducated beggar to provide you with one, but I will do anything for you.
That's a bech32 address, or a native SegWit address. A encapsulated P2SH will do fine (i.e. a SegWit address starting with a 3).
I created a multisig wallet but only saved xpub and seed, then I created another wallet and provided the xpub of the first one as the cosigner of the second one, this address is from the second wallet, when I want to send funds with it, do I need to open the first wallet? how about segwitaddress.org if I give you an address generated by segwitaddress.org all I'd need is the private key without the need for a cobeggar? can I lol once without getting hit by that already dead trout?
34sKRPi1Wvkrr4W7or8qw3QPdcnxFZi5RF
You're supposed to hold both keys. I recommend using Electrum (create new wallet using the latest version if you already have one), or Ledger/Trezor to get a SegWit address.