From a quick view of u r team looks like that u r best and more potential players are u r big men. So my advice is 1st to read how to train big men, (you can find how on the help forum), then fire all the players with less that 2000 salary. Oliver Kut and Hugo Griisa and Siim Toll is the base of u r team for the next seasons. Hire a coach 3-4 lvl with fitness or no specialty, try to expand u r arena, and dont waste money on 100-200k players. Spend some money on the scouting, and try to find an other trainable big man.
You have 2 ways to get money. 1) arena but u r in very low division so is hard to fill a large 1. 2) Produce players. I am big men trainer too, so every year i am selling 1 of them and then i am buying a player on the positions that i dont train. This season i had 4 players on my NT. The main skills that a big man needs is inside shot, inside defense, rebounds, and less important shot blocking. Dont chose to train 3 positions. 2 is enough and productive. 3 positions they results are coming very slow. Also for a player to get a full training needs to get 48 minutes minimum on the positions that you train. On the regular season u have 2 championship games and 1 cup or friendly, so make sure that on those 3 games u r trainees will get at least 48 minutes. During the all star game or at the end of the season u can make a team training for free throws or stamina, and this couz u will have 2 games instead of 3.
I hope that i gave u the basic idea how to play the game