Every new civil servant will try to improve his theoretical level. After all, as a civil servant, the level of theory determines his position. If you want to improve your theoretical level, I personally think you can improve it from these two aspects.

Read more books. The ocean of knowledge is endless, and you can learn a lot of theoretical knowledge in it. As long as you practice more and watch more, you can improve your theoretical level.

Ask more elders. At work, we can ask for leave like some older civil servants. After all, they are experienced for so many years and have many contacts, so their experience is a great asset. If you can learn some knowledge from it, you can further improve your theoretical level.