Random beats a system
Every combination in a fair draw has exactly the same chance, so no line is smarter than another. What a random line does buy you is a better share if it wins: people crowd around birthdays, so numbers above 31 and lines without an obvious pattern are less likely to be split with other players.
The draw uses your browser’s cryptographic random source with rejection sampling, so each number in the range is equally likely, with no drift toward the low end the way a naive modulo would give you.
Set duplicates off for a normal lottery line, or on for formats where the same number can be drawn more than once.