Normal that it sounds bad when raising that valley of 115 Hz with + 11 dB.
Equalizing is not raising or lowering a specific frequency, but you don't have to be afraid to get down to it.
You will see that looking for information is very easy.
For now, I advise you not to raise the valleys you may have from 300-400 Hz down.
more than + 3 dB to start and from 400-500 Hz and above do not put filters with a narrow Q.
If you put narrow-Q filters in the mid-zone, you will most likely be over-equalizing.
To finish a flat target if it is not well applied it can sound very bad vs what we could have before.
Equalizing is not raising or lowering a specific frequency, but you don't have to be afraid to get down to it.
You will see that looking for information is very easy.
For now, I advise you not to raise the valleys you may have from 300-400 Hz down.
more than + 3 dB to start and from 400-500 Hz and above do not put filters with a narrow Q.
If you put narrow-Q filters in the mid-zone, you will most likely be over-equalizing.
To finish a flat target if it is not well applied it can sound very bad vs what we could have before.