Sold some ETH yesterday, was 3320 when I placed the order, it sold at 3225 (lower than the lowest point of the day). Can someone help me understand this?

I decided to sell some of my ETH yesterday, it was a little after 10 AM, the price was 3320 as I was putting in the order (I use crypto .com). It says the sell order takes up to 5 minutes to complete.

Turns out my timing was unlucky as 10:15 saw a temporary dip down to 3260 before bouncing right back up over 3300. Oh well, shit happens.

I check my balance (for some reason the app doesn't tell you exactly what it sold for), divide it by the amount of ETH sold, and it turns out that the price I got was 3224.8.

Any graph I look at shows yesterday's low around 3260. I understand that these graphs are an average price of current transactions around that time and aren't perfectly exact, but I can't find any evidence of it hitting 3224 around that time period. Why did it sell for well under the going price?

I know there are more advanced price tracking tools, does anyone who knows how to use them see any evidence of ETH hitting 3224 at the time? I just don't understand it.

I contacted customer support in the app to ask if there's some fee I don't know about or what could explain this, they gave me a generic response along the lines of "market prices are variable and can change between the time when you place the sell order and it actually gets sold". I knew that, obviously that can happen and I got a bit unlucky, but for it to drop and also sell for UNDER that amount is just confusing. Whatever happened, taking a 2.9% loss between placing the sell order and it going through is disappointing.