Let me know which wallet are you using right now so i can guide you in detail more about the security concerns. In this world hackers have already made many attacks previously like ransomwar cyber attack and there is no wallet that you can save you from getting hacked from hackers. Don't use exchanges as they have high risk of getting hacked, but you can choose the best and good wallet which will give you high security and that will eliminate chances of getting hacked like HARDWARE wallets something like LEDGER NANO S, TREZOR etc. which are really tough and impossible to hack. I would recommend you to go for hardware wallet if you are worried about security.i am personally using trezor and i am really satisfied with it.

But smartphone or laptop can get infected when connected to internet, best way to store and use bitcoin is to sign transaction via electrum in offline environment (laptop without internet) and than broadcasting it using online tools.
guide here https://www.cryptocompare.com/wallets/guides/how-to-make-a-bitcoin-offline-transaction/

It is very easy to secure to your bitcoin wallet . First time you must create a 2fa verification code. You must use coinbase account or Blockchain wallet. If you use those wallet you can make a good save your won wallet. So you must use 2FA verification code, if you use it no one can login your account. when someone login your account you get a mobile code then you can put your code and login your account.

You can store bitcoin on hard wallet. Please keep private key carefully because if you lose you can not get back your bitcoin. Keep your bitcoin very careful.

Yes, in this situation security on wallet is more important. You can safe your private key personally. On your account you can activate 2 steps verification for more security. Don't click http links and unexpected links. It can cause of hacking your wallet.

If you are currently storing your btc in this way then don't do it , you might have a budget i get it but this real money , btc is now worth more than $6k if you store your btc in a laptop it will still be prone to hacking just buy any hardware wallet like trezor , it's really easy to use and also more secure than your laptop.

Wrong you can read my above reply to another user hardware wallets can't br hacked unless someone access it physical or if you are dumb enough to do some stupid more.

Again wrong online wallet means you are storing your funds in someone else wallet who claims to protect it , what if the site only takes your money your 2FA will be of no use. And btw if you didn't know there are still ways to bypass 2FA.

Each Bitcoin wallet must have different layers of security and different ways of securing it. But on average, they provide an option where you can add 2 Factor Authentication to give an extra layer of security to your wallet. 2 Factor Authentication is usually a verification via TXT pin that will enter the mobile phone number you registered when you created a wallet, or a Google Authenticator pin that you can install on your laptop or on your smartphone. As a result, every time you want to login to your wallet, you should be able to enter your e-mail address, password and TXT pin or GA pin to access your wallet.
The most important thing you should do to secure your wallet is to backup your private key.

for me OP, the best way to secure your wallet is to keep back-up your private key (12 word phrase) and turn on your security key to protect your
wallet specially your bitcoin wallet. and maybe dont store all your bitcoin in one btc wallet address. make it more and keep the key (12 word phrase) to full control your wallet. dont trust anybody or any sites that requiring private key or never fill up any form that requires your private key and password, most of the other sites that offers a good to be true return are pishing sites so aware on that.

What bitcoin wallet do you use? To secure your Bitcoins do not use any Bitcoin online wallets even they have good reputation or wallets that are provided by exchanges because they also know what is your private key, the best way to secure Bitcoins is to go for offline wallets such as hardware wallet if you can afford them but if you can't you can use desktop wallet as an alternative in a non virus/malware infected personal computer and also always keep your wallet software updated. The last thing is do not entrust your private key to other people.