Is coinbase a scam, or is it legit?

The broker adxmining trade sent to me my money into Coinbase wallet $6000 and told me to contact btcwithrawlsuppotcbid in coinbase wallet and I paid $2500 for to withdraw my money but they didn't give me

I traded on the Coinbase wallet exchange on 26/6/2024. I deposited 31001.45 USDT and traded up to 80812.78 USDT. When I tried to withdraw the entire amount, they told me that my account had been hacked and data had been stolen. They said I had to verify my account before I could withdraw money. So I went to verify my account. They calculated that based on my amount of 80812.78 USDT, I had to deposit 20% of the amount, which is 16162.55 USDT, in order to withdraw money. After I paid the tax amount, I tried to withdraw money and it said I had to wait one business day for approval. After the approval, I tried to withdraw money again and it said my account had been hacked and data had been stolen. However, my account had no transactions since the day I paid the tax to withdraw money. The amount I paid was added to my account. When the amount was added, it said I had to verify my account again based on my amount, which is 103982.43 USDT. This means I have to deposit 50% of the amount, which is 51991.21 USDT. They don't want to let me withdraw money, so they make it difficult for me to deposit more money. I hope everyone can help me recover my money. Thank you.

https://coinbeneaeg.com/#/home While socializing on Facebook, I added a friend on LINE. I was persuaded to deposit money into the coinbase, introduced to a coin merchant, and bought Tether to operate on the platform. When I made a profit and wanted to withdraw, the platform demanded that I pay a 20% personal income tax. After paying this tax, my withdrawal still couldn't be processed because the review failed; they said I was a large withdrawal user and my account funds were frozen. They required an additional security deposit before I could withdraw. I paid part of it but ran out of money for more payments. Then, the platform told me that my account funds would be managed under third-party bank supervision. I feel like I've been scammed.

I processed a withdrawal on June 17 but did not receive the money. On June 18, I asked the customer service, and they said that the system checked your withdrawal address: Xxxxxxxxxxxxxxxxxxxxx and found that it was a risky and suspected fraudulent address. To protect the safety of your account funds, the account safety mode has been turned on for you. To close the withdrawal channel, you need to apply for a first-level certificate, which requires you to upload your ID card and the accompanying content: I guarantee that I have not participated in fraud. I also need to pay a special fund of 5800 USDT for the certificate. This amount will be reviewed separately by the financial department and will be issued to your account balance after the review is completed. This is the only solution. Since the account has transactions with a fraudulent address, a guarantee is required to process the withdrawal for you. The CSRC guarantee requires you to apply for a first-level certificate, which can be as a guarantee.