https://boardgamearena.com/faq?anchor=f ... implelobby is for automatic matching in the simple game lobby rather than the arena, but they (should) work similarly. There's some amount of time in which the matchmaker will only place you in tables that are "okay". After a while it will also look at "prefer not" tables. Eventually it will look at "reluctant" tables.
How do you create your arena games? From the game page, or from the "play now" lobby?
The following is speculation on how matchmaking functions:
1) Possibly you're missing out on slower games because people who prefer those are being matched with each other before you are being considered.
2) If you're using the "play now" lobby, I expect that a "real" table (with an assigned table number) is being created for you whenever you request a match and there isn't already an open table that meets all of your "okay" parameters. If so, I believe that table will have specific game speed and playing hours set, which is very limiting indeed when trying to make a match.
3) If you're using the game page (I'm guessing not from your settings image), when you request a match you're probably being placed at a "virtual" table (no assigned table number), which can be merged with other virtual tables (and possibly other real tables?) that have compatible parameters. On the one hand, that's less restrictive and should be easier to match with your less-favorite parameters once the time for best-match only has expired. On the other hand, given various and sundry bug reports, I am dubious about the current quality of virtual table matching in non-trivial cases. On the gripping hand, the ability to specify one's range of acceptable playing hours for a fast turn-based game from the game page is rather limited, and I don't recommend it.
If you're willing to play some slower games, you might try setting some of the slow turn based game options to okay, so that matching doesn't also have to consider playing hours. If there's an existing table waiting for a player that's within your expanded parameters, you might be placed in it immediately. If there isn't and speculation 2 is correct, you may still be creating a fast real time table that's harder to match because of demand & playing hours.
If you are willing experiment and mess around with settings a lot, and are willing to accept more than one game if that works out, you could try requesting a game with only slow turn-based options set to okay, and separately a game with only fast turn-based options set to okay, and see how long it takes to get either one.
Whether any of that will get you the games you want I don't know.
Question for Terraforming Mars arena players generally: do you play fast turn-based games?
