At one month in, it seems to me that you are trying to run, before you can walk. This is not meant to be negative or a put down, quite the contrary. The game is designed for the long grind - you don’t mention what level your stronghold is or your other buildungs, but after one month, you can’t really have the resources - or the ascension material - to level up 5* heroes.
I would say you are best served leveling your 4s at the moment. The ascenion items, while also rare to acquire, are lower in number for 4s. And if you ever want to compete in the rare level of challenge events, you will also require leveled 3* heroes.
I would also recommend reading this:
https://forum.smallgiantgames.com/t/advice-for-new-players-or-all-the-things-i-wish-someone-had-told-me-when-i-first-started/34432
and this:
https://forum.smallgiantgames.com/t/6-month-mark-my-advice-to-new-players/56242