Any government and institution can never kill bitcoin. The government in my country has banned bitcoin, but there are still many people who store and use bitcoin. Even though the Binance exchange has been blocked, we can still trade our crypto assets using a VPN.

This is true. I once saw a post on the forum that says that people in some countries have been blocked from accessing any bitcoin related site (including this forum). But then, he was advised to change his IP address and I believe it worked for him. So if that's how they plan to stop bitcoin, then it won't work as people now know How To change their IP address.

Simply, because they won't kill bitcoin. Btc brought the changes in the history of transaction and payment. Imagine, a society wherein you can buy or sell products without holding a fiat currency. Government can't remove bitcoin because they don't know how to do it. Unless otherwise, they shutdown all of our internet connections. In fact, even the creator of bitcoin seems to be anonymous until now. So they have no power to reverse nor stop bitcoin from using it. Banning bitcoin would become an easy step but I know as time goes by, citizens of every country will see bitcoin as good. And government, can't do anything when people decides to use bitcoin.

The government in the future will definitely make applicable regulatory rules and gradually bitcoin will still be acquired by the government so this is still not guaranteed when in a situation like this, how the government understands blockchian really takes a long time to optimize it to the government, therefore the government does not can kill bitcoin even with many communities.
Currently, the whole world is almost familiar with bitcoin, so one of the reasons why bitcoin is easy to develop is that the government still legalizes it in a country with a large community.

I guess government and hackers can kill Btc, but btc is still running and moving forward. It is also legal in most other developed countries so on the other hand, maybe they are also protecting it.. and I think as long as people have transactions, btc will continue to grow.

I think why the government didn't kill BTC, the answer is quite simple because BTC is unstoppable, unregulated and untraceable
The government must gradually adapt to this situation where BTC becomes a hive in society because of the need for more flexible transactions

Bitcoin is a decentralized currency which is ready to help any government to reduce unemployment in the country. During the pandemic many people lost their job because of the virus that was spreading all over the country, that was causing killing of citizens and collapse of economy in the country . Government impose wearing of facemask and washing of hands to help people to  prevent the virus that was affecting the citizens in the country. Many citizens use the bitcoin to sustain during the pandemic which was making other citizens who does not have idea on bitcoin, really experiencing the hardship in the country.
With the enough envidence the government saw with bitcoin, during the pandemic where other cryptocurrencies where reducing in the exchange market which was causing bitcoin a serious pumping through out the period. Government are ready to create more conducive for all bitcoin users in the country.

I think the reason that governments don't kill Bitcoin is quite simple. They can't kill Bitcoin because it doesn't work that way. As we know, Bitcoin is a decentralized cryptocurrency. So, there is no such thing as "killing Bitcoin". If Bitcoin would be in control of the governments like fiat, then we could argue about it.

Killing BTC can't happen in a straightforward way. It can only be killed "on paper" at this time, which won't achieve much.
However, to really kill it, the governments of the world will need to work together (which obviously isn't easy) AND do it as a process. Put lots of walls around it, slowly add regulations around it to squeeze out all value out of it and try to make it as unattractive as possible. Tax it higher, scare people, etc... So far, they don't seem to be having much success with those tactics, but it's reasonable that they will continue to try in all ways possible that do not make them hated by the public.

No one or nothing stopping them.
Because they can't not unless the whole world will stand as one and decide to ban the usage of Bitcoin and close all exchanges in the world,then maybe little by little this will die,but very impossible to happen because never that will happen about the world will decide as one specially in something that others believe that it is Helpful like Bitcoin.
Nope no government is broadcasting their full support for bitcoin though there are some country that let this operate in their areas.
Either Government is owning Bitcoin secretly or not,it doesnt matter because still World will decide about what crypto future is.