Active not passive
Use active sentences wherever they’re the most natural.
Once you’ve started using more verbs (well done), you’ve still got a couple of choices as to how to use them. That’s because there are two fundamental ways of constructing verbs in English. Introducing, ladies and gentlemen, the active voice and the passive voice. And which one you pick will make a big difference to the feel of your writing.
Now, the difference is quite a tricky thing to explain, so I’ll do my best without turning this into the kind of hideous grammar ...