Firstly, the clarity of one's writing isn't dependent on whether their writing is packed with active or passive sentences. The impact, however, sure is.
NeuroSummer was given an ice cream (by NeuroWinter.)
The above sentence may be passive, but if the narrative focus is on NeuroSummer, then it'll be a perfect choice.
NeuroWinter gave NeuroSummer an ice cream.
NeuroWinter gave ice cream to NeuroSummer.
These two sentences are in the active voice, but it has the following focus order: NeuroWinter>> NeuroSummer === Ice cream.
So passive voice, at times, can have a much greater impact than its corresponding active voice. That said, you must avoid passive sentences as much as possible during situations like fight scenes where the pacing is crucial and the tension is high. One or two passive sentences in a scene such as 'NeuroFall was chased by a reindeer' will work just fine, but it's better to use them sparingly.
Now, moving on to the main part...
To simply define Active and Passive voices, the subject is active in the former, and passive in the latter.
NeuroSpring was chased by a polar bear(one that just left hibernation, of course). ---> the subject here is
receiving the action.
A polar bear chased NeuroSpring. --> the subject here is doing the
But note that the subject is always the MAIN focus. (That's how our subconscious minds' perceive it, I think)
If both voices do their jobs, why only passive sentences get the short end of the stick?
Rani's skull was broken to pieces by Raja. ---> Passive, so tends to
Raja shattered Rani's skull ---> Active, tends to be concise, and also
allows you to use stronger, vivid verbs.
Sparrows could be seen flying in the sky.
Sparrows fluttered about in the sky.
Sheela was a lovely girl. She was liked by everyone so much.
Everyone likes a lovely girl like Sheela.
If you want Sheela to be in focus and be better in the passive voice, then...
A lovely girl like Sheela was liked by everyone so much.
Last but not least, there are many ways to write one sentence, but choose the one that best fits your scene, regardless of its voice.