As a casual player, need help on my build

This is my POB https://pastebin.com/dpDnx6k5

I'm not that very good with I how build I just followed a guide:

"

https://www.pathofexile.com/forum/view-thread/3229979

How do I increase my ignite DPS? My unreserved mana is in negative how do resolve this, should increase my max mana? Should I need to have more accuracy?

Any insights will do :3

With an essence of loathing and some eldritch ichors you can get alot more mana reservation ,

And for damage you can get +to socketed gems on your bow with some other stats for like 10c