I started the game in a random club in the 1st Polish League, without any reputation or badge.
For first two seasons I used the tactic from the previous FM version created by @Chris1428 (I tested this tactic in the previous edition starting from the lowest league in England and the results were amazing, once again great job @Chris1428 this tactic is still amazing in FM20).
This tactic is very effective and i'm a big fan of the IWB and BBM roles. This tactic ensures a small amount of lost goals, but on the other hand it also does not guarantee high effectiveness under the opponent's goal, it is simply an ideal tactic for surviving and strengthening the squad.
Below how it looks:
After two years, when I decided that the squad was good enough to fight for the championship, I easily switched the team to play with more offensive tactic while maintaining the basic assumptions and tactic structure, only two changes
Switching to this tactic allowed me to score 20 goals and stay behind at the same level. After that it was much easier, I signed many talented young players. I have to wait three seasons for them to develop.
Maybe it will be helpful for someone