If you just play your guitar against chord changes without regard to the story you're trying to tell, your solos won't be very interesting.
Here's a path to making interesting solos.
First, learn to play chord tones in your solo chord progression. Finger each chord in your backing track and just play the notes that are in each chord in your voicing (fingering). If you know multiple voicings for a chord, even better. Play all of those.
Second, learn to play the scale tones in your chord progression in the same positions as you play your chord voicings. You say you know the pentatonic scales, that's fine for a start. You'll want to learn the major and minor scales later but that can wait for now.
Next, play both the chord tones and the scale tones in your solo. Concentrate on playing the chord tones and use the scale tones to connect them by either moving up or moving down and by moving in varied increments of a fret or more.
You want to concentrate on the chord tones because they are the strongest notes of the solo. Once you get this down, try the trick of big jump up and small steps down and vice versa. Another tasty trick is taking a fragment of what you're playing and repeating it. Repeat and vary your ideas a lot, it helps glue your solo together. You can find more tricks that also apply to other forms of music at https://www.cs.hmc.edu/~keller/jazz/improvisor/HowToImproviseJazz.pdf
Okay, now you have the basic techniques down for doing a solo. Now you have to learn to tell a story.
A story follows a narrative arc. A narrative arc is usually:
Exposition: The introduction of the story in which characters are
introduced, setting is revealed. Here is where you can introduce a melodic fragment, riff or themes that you want to play with and against. A memorable Roy Buchanan solo only used a single note.
Rising Action: A series of events that complicate matters for the
protagonist, creating a rise in the story's suspense or tension. In music, rising action can be increasing speed, volume, distortion, dissonance or two themes in a call and response. There are others but this is a start.
Climax: The point of greatest tension in the story and the turning
point in the narrative arc from rising action to falling action.
Falling Action (Anti-climax): After the climax, the unfolding of
events in a story's plot and the release of tension leading toward
Resolution: The end of the story, typically, in which the problems of
the story and of the protagonists are resolved.
You can cut this arc at any point. I'm rather fond of ending solos at the climax but YMMV.
The best way to learn to tell a story with your solos is to listen to lots of great solos and sing along with them. What's a great solo? A solo with a narrative arc. Once you've got this down, go back to your backing track and sing solos until you feel like you can tell a story. Once you can sing the solos, try to play your guitar like you're singing. Your playing doesn't have to be an exact copy of your song. What you want it is the feel.
That's what I got. Go forth and make an impact. Even with relatively limited technique your solos will stand out against most of the rest.