The art is average, the plot is on the simple side, and the magic system is poorly explained, though it seems consistent enough to function.
Overall, I find the execution to be what holds it back, as there are several important things to know that aren't made clear—like how the existence of the villains works and why magic has 2 modes and how they relate to each other—so even if the immediate situation is explained, the world still feels inaccessible. We don't even know why the main character did some of the things they did and are just told "no one else could do it".
Here's my theories on the above missing elements, by the way:
The villains, called catastrophes, can manifest themselves away from their main body, and so defeating them anywhere else from where their real bodies are is a temporary victory.
OR:
Catastrophes are collections of memories manifest into monsters driven by important former emotions and motivations and can re-manifest in the right circumstances. New types of catastrophes can be created in cases where enough magic meets enough willpower and sorrow, and from there, they can become manifest repeatedly until some important core that's hidden somewhere is destroyed.
I don't know which one after 64 chapters.
Magic requires trading things with the gods, usually personal mana or lifeforce, for the ability to do spells, and once the spells are unlocked, unless it's really special, they can be used without renegotiaton with the gods.
I think.
Author, you're developing backstories for these villains, but it's really hard to care because the story doesn't want to let us know things that everyone else knows about them that we don't yet. Also, your magic system is hard to follow: if there are rules, please make it more clear. I'm 64 chapters in and still guessing at basic but important information.