If Bitcoin developer finally come up the solutions to this problem, then most of the wallet we using will be uninstalled, and more new wallets will be created as well?
I'm just thinking this maybe these quantum resistance addresses will be supplied to every wallets out there?

How would it done?

Op the source of this information is needed for more investigation. Quantum Computer can't stop the high security of Bitcoin. There will be no additional security on Bitcoin than the highly recommend securities of Bitcoin. You can secure it offline and online with non custodial wallets. And don't keep your long term investment Bitcoins in exchange or custodial wallets.

Exactly, institutions, whales or even governments are pouring billions of dollars into bitcoin and they are very optimistic about the future of bitcoin. They don't even care about 51% attacks or quantum computers, and what they are doing is actively accumulating as much Bitcoin as possible. Meanwhile, small investors like us worry about those things, don’t we see how meaningless that is?

I believe they even understand those things better than we do because they have the technical team to analyze and evaluate those things. So if they don't worry, we don't need to worry either. We should focus on accumulating bitcoins, don't complicate things and waste unnecessary time.

When someone enters this industry and is interested in investing in Bitcoin, the first step they need to take is to learn how to protect their assets, as it's much easier for anyone with the money to buy. Individual error is unacceptable, as we hold such a potential and valuable asset, and it would be a shame if something unexpected happened. There are many reference sources available, as there are guides that may be included as steps to make it easier for someone to learn. The most important thing is that someone is willing to learn and understand the steps to take to prevent unwanted incidents.

I was reading a news article saying that bitcoins will not be safe once we have powerful quantum computers. Is there a good alternative way to store bitcoins safely in such a situation  ?

Yes, based on the theory, quantum computers are a threat to crypto any cryptographic system as you say. But in reality and so far, there has been no real threat from QC and damage to the crypto industry. Everything is still theoretical so I agree with the view that QC cannot prevent or harm bitcoin in particular and the crypto industry in general.

Let's imagine that we are criminals (in fact, honest people) and have access to the latest quantum computers capable of cracking modern encryption systems. Is it advisable for us (having such quantum computers) to hack bitcoin wallets of ordinary network users? At the same time, we even know in advance whether a specific bitcoin wallet contains satoshi for a large sum of money or not. Of course not! It is much more promising to hack the computer system of some large corporation that conducts an audit and inventory of its settlements once a quarter. During this time, many fictitious payments can be created in the corporation's accounting system, which will allow very large sums of money to be quietly stolen.  This is exactly what real criminals do, there have been such examples in history 👮

For real criminals who have received a super-effective tool for cracking codes, Bitcoin is far from the most interesting object for attack🦖

For example, if such quantum computers fall into the hands of state intelligence agencies (and this is most likely what will happen in practice), then their main interest will not be in Bitcoin, but in the military and industrial secrets of other states🥥

It is also necessary to take into account that the Bitcoin developers know perfectly well how to protect the network of the first cryptocurrency from such attacks. And if they have not yet changed the Bitcoin code, have not made the appropriate changes, it is only because these threats are currently potential, not real.💻

I was reading a news article saying that bitcoins will not be safe once we have powerful quantum computers. Is there a good alternative way to store bitcoins safely in such a situation  ?

Protecting their assets is a must, so we must learning how we can prevent. I am sure the dev will not stop the development to have a better security with a better wallet, so nothing bad will happen.

We should prevent human error by reading and learning many things. That is the key to facing the thing that can happen.