My experience playing Splinderland and seeking tips to progress to the next level

Hi Friends,

I recently entered the world of Splinterland and achieved the Bronze Level III after battling through various levels.
BRONZE III

I found this game not only interesting but also challenging. To select battles, I carefully considered my MANA points. As a newcomer, I want to make this game even more easy and interesting.

Since many players are already geniuses at this game, can you please help me by giving some tips to move on to the next level?