Regarding the advantages of PoS, two points are often mentioned:
1. Energy saving and environmental protection. The out-of-block node does not use the mining machine for the power competition to mine, but by holding the currency "mining", it is absolutely energy-saving and environmentally friendly.
2. Higher TPS. In general, the latency of PoS can be done very low and the confirmation is very fast. In the PoS system, a transaction can be published and confirmed.

PoS security issues
From the perspective of system security, there are at least two major security risks in PoS.
1. Nothing at Stake: In a nutshell, if the attacker forks the current chain, there is no need to judge which chain will win for the “miner” holding the coin. The strategy is to "mining" on both branches at the same time. Because no matter which branch wins, it will benefit for Stake's holders, and the process is not like PoW. The spelling power of "real knife and gun" needs to burn money. PoS has no consumption all the time, so for the money holding For block nodes, it is entirely feasible to mine on both branches at the same time. This leads to the fact that in some cases, maliciously forking a PoS chain is unlikely to succeed. Once the attack is successful, a chain may split into multiple chains, which will cause a series of serious problems such as transaction rollback and double flower.
2. Long Range Attack, which is a more difficult problem than a non-invasive attack. Instead of splitting the existing chain, the attacker starts with the initial stage and creates a new, longer chain that makes the network mistakenly think it is the main chain. If you want to build a longer chain on Bitcoin, you need to have more than 50% of the computing power of the entire system. This requires buying a mining machine, requiring energy consumption, and requiring huge capital investment to win. In contrast, PoS can "cheat" the algorithm to create a new chain, and this process does not need to invest in the mining machine, no energy consumption, the attack cost is much lower than PoW, once the attack is successful, the consequences are very serious, reconstructed The chain may completely replace the original chain, and many attributes such as tampering will be destroyed.

Is the Ethereum pos mode going to progress or regress?

Today I saw the news that $ 40 million was stolen from the Binance exchange, but in spite of this the price remained the same and even slightly increased. At the moment, the market behavior is very unpredictable.

I personally tested so many blockchain but i feel ethereum is the only blockchain which will override all the other blockchain

What were your finding and results in your testing?

Which tests did you perform?

https://cointelegraph.com/news/an-ethereum-20-proof-of-stake-testnet-blockchain-is-now-live 

Yes, after waiting for many days now the price of Bitcoin is mooning which it is going to be very good sign for the people who are holding ETH, with the above new will easily help the ETH to increase its value in the coming easily. If Bitcoin manages to cross more than 6500$.

I do not think that they will be able to do it - if hackers are not dilettantes, then it will be impossible to track them down. The funds are most  likely would be washed and taken to offshore.

But you didn't share the details in which field you tested all other blockchains and what make it different from all others. If you would like to share your experience with us than it will be helpful.

I see. Thank you for clarifying.

I like Ethereum and the ethos behind it, I hope it stays around for a long time but equally hope it will continue to evolve and update just to stay one step ahead of the rest that try to emulate its features an offerings.

I'm certain it will happen this year.
No one can tell when exactly it will happen, but as we stay patient, we will surely see at that price again, or even higher.