if you want to invest in the long term, for example once every 4 years you sell.
I suggest you keep it in a trust wallet if you don't have a hardware wallet yet.
but if you want to invest in the short term, for example every day or every week, saving on binance is also not a problem, because so far binance is very safe.
it all depends on your interests, want long term or short term.
adjust seja according to your ability and comfort.
There are a lot choice of good wallets, so there's no need to use Trust wallet as your hot wallet. Electrum, Blue wallet, Samourai are the best option because they're non custodial, open source and easy for beginners to use it.
Invest in the short term for every day or every week? you should move your coins after a month to your non custodial wallet because Binance is only used to buy and sell your coin, not hold for long term.
Honestly, if someone wants to invest serious money in bitcoin and wait for the increase in value to sell at a profit, then, in my opinion, it is best to keep those bitcoins in a ledger, an external device that is not connected to the Internet.
If you are investing on the principle that you will invest money and after that you will not do anything with that bitcoin but just wait until the bitcoin reaches the desired price, then ledger is a much better choice in terms of online security than any online wallet.
If you will be buying or selling your cryptocurrencies frequently then I suggest Electrum as an online wallet.
Just as you study online wallets, you should also study cryptocurrencies themselves, and make investment decisions based on concrete facts and analysis, not based on what you hear in the media or read on the Internet.
It's important to have a concrete investment plan and a clear exit strategy.