Many people leave their btc in exchange
If you know anyone like that, please introduce them to read
Reminder: do not keep your money in online accounts
I usually when I receive a few reais of my currency I prefer to accumulate and every time it drops I buy a few fractions of btc then withdrawing it to a self-custody wallet.
It's a good practice but if the amount you receive or accumulate is small, I'd suggest you to hold it on exchanges for a while and only withdraw it to your self-custody wallet when your calculation shows that withdrawal fee does not eat up the amount you have.
Centralized exchanges charge very expensive withdrawal fee even they do batch payment for many user withdrawals.
Yes I understand, I try very hard to evangelize my friends, but they don't care or are not interested, I've tried to evangelize my family but they say I'm crazy. This is not just an investment and when I understand this I am not afraid of the falls that bitcoin has.