Labouchere link might help explain...

https://www.gamblershandbook.net/gamble/roulette/beginner_labouchere_line.html

I think there are some good hints and alternatives here!?

For our purposes I think you would want multiple Lab lines working!  Hope this helps someone.

BOL

Tod Wilkinson, who introduced the labby on covers a few years back has a good explanation of how to use it, and new modifications...also a very good labourchere source

https://www.platinumsportsinvesting.com/labourchere.aspx