The mini Dow (YM) is $5 per tick. Because the Dow moves in whole-point increments it's also $5 per point. The emini S&P (ES) is $12.50 per tick and because it moves in quarter-point increments, it's $50 per point. But the S&P is roughly one tenth the Dow, so where you might get 20 points on YM at $5 each = $100, the same move on ES would be 20/10 = 2 points at $50 each = $100. There are some other things to take into account (the Dow moves 20 points in 20 whole-point ticks but the S&P moves 2 points in 8 quarter-point ticks), but they roughly compare.
Risking 1% of your account per trade is a rule of thumb. If you open a trade having estimated the Dow could move 20 points against you before you close it (how you arrive at 20 or however many points depends on where the price is in relation to significant support/resistance, other significant levels, your target price, other things), you're risking 20 points = $100 on YM = necessary account size of $10,000 to open that trade with 1% risk. If your account is $5,000 then 1% risk would be $50 = 10 YM points, or 1 ES point.
I say all that to point out that you need to consider trade/stake size in the proper context of risk management rather than just a figure on its own that - on its own - may seem small.
You may have read that intraday is more risky, but have you thought it through yourself and done the (simple) maths? If you risk x% per trade and manage your trades with discipline, is it more risky than daily, weekly or LTBH? The longer term your trade, the bigger your stop has to be, therefore the larger your account, to stick to a fixed % risk per trade. Trading intraday might whittle down your account slowly if you take many small losses, but they will be small if you manage them properly. If you see that happening, work on your art until they become small gains.
I'm only repeating what others have said here before so beware of my received wisdom, second hand advice etc.
