I will invest in Bitcoin. I don't know where to invest.
It is not a question. Invest in Bitcoin. No where to invest. If you ask what coin to invest in, it is Bitcoin, you wrote it.
Should I put it in Trust Wallet or Binance?
Your question is where to store your bitcoins, not where to invest.
As they mantra in Bitcoin, it is not your keys, it is not your coins.
Binance is a centralized exchange and they did not give customers including you, keys of your bitcoin.
Trust wallet is self custody, you have keys but fhe wallet is close source, not open source.
What wallets are better?
Four main criteria: open source, self custody, support Tor, support Segwit and Lightning Network
Electrum, Bitcoin Core, Sparrow and hardware wallet like Trezor, Ledger.