I noticed that a lot of tsumego puzzles are not that relevant to the 9x9 board, so I turned some of my mistakes into puzzles https://online-go.com/puzzle/18952 . At the moment it contains 18 puzzles, but it I have not looked through all of my games yet and I am excellent at making mistakes, so I expect it to grow considerably over the next few weeks.
It contains tactical puzzles (life and death, oppurtunities to split your opponent) and strategic puzzles (Is it worth it to kill a group? What is the best way to kill a group? Do you safe your stone or sacrifice it? What option leaves you with the most territory?).
If you would like to do the puzzles and see some alternative solutions or mistakes, please be so kind to reply with an explanation of where I went wrong and I will fix it.