It is what it is, some people think it's too slow, others are okay with the speed. Tournaments are available now for an extra 'meaningful' game each week. The Cup is there each week too, although the newer teams obviously aren't going to last as long as the higher teams.
With regards to training, you joined on 29/3 with your first training update on 30/3. It was impossible for any of your players to receive training then, as they hadn't played a game for your team yet.
The next training update was 6/4, only players that played as a forward for your team on 1/4 or 4/4 will have received training then. I noticed you played some of your newly purchased trainees in positions other than forward. If you don't play them in their correct position for training, they won't receive any training for the week, hence no pops.
It seems like there's a couple of reasons why you haven't noticed any training pops yet. If you play your trainees as forward and continue to train scoring, you'll notice pops within the next couple of weeks, guaranteed.