Re: Daily tournaments from 4 to 3 every 12 hours?
The 4th one that was removed was labelled as 'Launch' so I think this was deliberately just a short-term offering to help people earn a few more reward points ('coins') initially. I think they're intentionally gone now.
There's a progression across the different tournaments and what you can do for no net cost will depend how well you do. Note that the tickets won from the Pro and Tour daily tournaments can be used for entry for weekly and seasonal tournaments where some Rewards Points can be won back. There is a free-to-play mechanic here but not if you repeatedly enter tournaments that you aren't yet good enough to be competitive in. I currently do the free and Pro level daily tournaments, with my winnings from the free tournament covering the cost of the latter. I'm not good enough currently to also sustainably play the Tour level tournament though.
Right now I actually really appreciate the daily/weekly/seasonal tournament element in the game as something to aim at outside of career mode (which I've yet to start).