Well the thing is if you plead guilty you’re immediately at the mercy of the judge. They simply decide on your sentence based on the provided information and give you a penalty in line with the laws around it.

Even if your the most guilty of the guilty, you’re generally better off having a jury trial to determine how guilty, as if you appear sympathetic you could get the minimum penalty rather than the maximum. The exception would be if you had an exceptionally good plea bargain for pleading guilty.