If you actively trade, then on the exchange, because it will be necessary to sell quickly or quickly buy coins, and if you are a holder then of course it is better wallets, because it is safer

Keep tokens on the exchange only in case of speculation. In case of long-term holding keep it on wallets. Try to have desk-top wallets and Ledger because online wallets are also not reliable.

to be more secure I used to keep it in the wallet PC or wallet is more secure and I can control myself, because if you keep it in the place of exchange usually it terallu risky because it could have the market is closed and your balance will be stuck there.

Personally, I'm in favor of wallets if you will hold your coins. It's safer to store coins in wallet. Sites can be hacked unlike wallets. Exchange sites are prone to hackers. You just have to keep your private keys. Don't lose it or else you won't have access to your wallet anymore. Say goodbye to your coins. But keep your coins on exchanging sites if you will trade immediately.

I think it is best to keep your funds in your exchange wallet . Tho you should be careful on which exchange site you are going to store it . Make sure they have a good reputation or background on their security . I mean , no history of being hacked for long term . It is good practice to keep your funds in exchange site if you are a constant trader .

Keeping it in the wallet - This is good only if you want to withdraw or convert your balance into paper money . I mean , wallet can be stolen . hacked . If you have a hardware wallet then its the best option if you just want to protect your funds .

So it still depends on what purpose you want . If your a trader then keep it in your exchange wallet , because if you keep transferring your funds into your wallet , problems may come up like slow/high transaction fees . And during dips , you need your fund to be readily available always . On the other hand , if you just want to secure your $$ then like i said a hardware wallet is the bext option for that .

It is of course not good to put your coins on exchange wallet unless you are ready to trade every day but if you aren't  and just want to hold, you are putting your coins in danger. There is no safe place unless its going to be in a wallet that you hold the private key. This is the most important of all that someone in the crypto should put in their minds. As a matter of fact we discourage systems that asks our private key as its like giving a password.

For long term and hold I suggest cold Wallet, if you would like to trade then Exchange
another possibility is splitting, part on Wallet part on Exchange

The only good thing in keeping your coins in some exchange site is that, if hard fork was happen during your coins is in exchange site, you can get another coins but it is different from your old coins. While if you open a wallet for each coin, it is safer than keeping all your coins in only one wallet. Many wallet account are too much expensive in sending gas for trading and transaction that's why I have only few wallet accounts.

Exchange is very convenient for trading as your coins are readily available when needed. Wallet is a better option for long term investment plan with an intention to hold.Wallets especially hardware wallets are safe and gives you control of what happens in them.

depends on how many coins value you have cause some coins has higher withdrawal rate and if you have only couple of coins on hold its not worth to pay the withdrawal fee  for example you have 20pcs VENCHAIN at Binance ven withdrawal is 2Coins its not worth to throw 2