If the wagering requirement is that we have to bet xx times before withdrawing the money, we will certainly have difficulty if we only deposit $ 10-$ 20.
That amount can run out quickly even before we can reach the xx times that is the wagering requirement.
But if you deposit $50-$100, of course, you won't find it difficult to reach xx times the wagering requirement.
And as gamblers who don't want to risk losing too much money, we should gamble moderately and not try to chase promotions that are too demanding.
It might be right to look for casinos that do not have low wagering requirements.
I think you do not get the point here, mathematically the difficulty is the same for both small and bigger deposit.
Here is simple example for 5x wagering requirement for $20 and $200 deposit: For $20 deposit, you need to wager $100 and for the $200 deposit, you need to wager $1,000.
By logic and by math, wagering $100 starting with $20 is equal to wagering $1,000 starting with $200 and the expected lose is also equal in terms of percentage (not in amount).