Solidity question

I'm still new to solidity and still learning but based on what I learned so far once you deploy a contract to the blockchain everyone can see the contract code.

now I wanted to look at some code for some scam tokens I have in my wallet which I got airdropped, I want to know how they work but when I go to the contract tab on bscscan there is none.

How does one bypass displaying your contract code on the blockchain and since you can omit that info a certain way isn't the whole concept broken then?

contract address - 0xD5E3BF9045Cfb1e6dEd4b35D1B9C34be16D6EEc