Most people use their fingers.

... I'm shit at soloing too, I'm just here for the real answers.
You solo by playing the right notes at the right time. What that means is both so nebulous and so specific to the individual you kind of have to work it out for yourself.

Pentatonic scales are scales that have five notes. What people generally mean are the major and minor pentatonic; the major contains the intervals 1,2,3,5,6 and the minor is formed of 1,b3,4,5,b7.

They're generally used because they contain the most generally harmonically stable notes in the key; they have the notes that most reliably sound "good".

Now, if you want to ask a more specific question then you might get a more useful answer.
R.I.P. My Signature. Lost to us in the great Signature Massacre of 2014.

Quote by Master Foo
“A man who mistakes secrets for knowledge is like a man who, seeking light, hugs a candle so closely that he smothers it and burns his hand.”

Learn what the intervals sound like.
A third, a fourth a fifth.

Then you know which two sound good flowing from one to the other.
Train your ear. Listen to every guitarist of note from every band you enjoy.

Learn a bit of theory, not too much where you get overwhelmed

Learn how to bend with control

Work out vibrato that works for you

Look up every Paul Gilbert video on youtube, study him well

Watch Marty Friedman's Melodic Control

Check out the stickys in this section of the forum

Do all of this with your guitar in your lap and in your hands.

Ask more questions
Legato and fluidity in your playing is where it's at