Indeed. Given that a toddler isn't capable of "murder," we're talking accidents. Of which there were 486 lethal ones in the US in 2019, the last year for which the CDC has collated the data. Pretty sure there were more than 121 lethal accidents caused by people older than toddlers.
The actual rate of gun deaths caused a toddler (age <= 3) firing a gun was 15 for 2015, in 13 of which the toddler shot himself.¹ True, “murder” is not the right term, but I wasn’t quibbling about that. I’m not sure “accident” is the right term, either, as in every case an adult committed a horrible crime in allowing the child access to the loaded weapon.
If there were 486 toddler gun deaths, then on average, those occurred 1.33 times per day. The frequency of gun-related toddler deaths is literally "every day".
No one said anything like there being “486 toddler gun deaths”. Much less that many deaths caused by a toddler firing a gun, which was the original subject.
Hint: stop digging, admit you're wrong.