Luckily you only had 100$ on that wallet. The 12 words phrase (seed) is the only way to recover your wallet.
Potato Chips is right. Without the seed, even Coinbase's customer support can't help you recover your wallet:
Coinbase Wallet generates a 12-word recovery phrase, known as a ‘seed', that you and only you have access to. This means that if you lose your recovery phrase, you will lose access to your Coinbase Wallet.
Can I get another coinbase wallet just like I had? Now I had the 2nd authentation
for that wallet.
Yes, you can create as many wallets as you want but always remember to back up your seeds.