Transfer fees are cheap. You can send a million dollars using one satoshi (0.002 dollar,) you must be smart in mathematics to be able to calculate that.
You are suspicious of transaction fees and fees that platforms charge for depositing and withdrawing
both are different from each other and you can avoid platform charges by stopping using them.
You can pay $ 1 or set up the Lightning Network wallets to pay less than it, which allows you to pay much less.