It’s a losing battle really. Mainline is a major offender and I have just come to accept that you can’t really base what flight to list for based on the list. About all I use it for is jumpseat backup protection.
Flights I have been convinced I wouldn’t get on due to being way oversold I do and ones I feel should be an easy go end up being a nail biter. Just list for the flight you need or want and go for it. That’s how I do it. So far so good.