Girl from Yesterday
Verse
I’ve been chasing shadows
Looking for ghosts
Mirages I watch fade.
I’ve been searching faces
Hoping I’d find
The girl who got away.
Pre chorus
I catch a glimpse once in awhile
Of her familiar smile.
I see her then she fades away.
The sun’s last glorious rays.
Chorus
She comes to visit but never stays
The girl from yesterday.
Girl from yesterday.
Verse
I’ve been having trouble
Finding myself.
Forgetting how things were.
I’ve been going crazy trying to find
Another girl like her.
Pre chorus
I catch a glimpse once in awhile
Of her familiar smile.
I see her then she fades away.
The sun’s last glorious rays.
Chorus
She comes to visit but never stays
The girl from yesterday.
Girl from yesterday.
Bridge
I doubt that I’ll ever forget her.
Never love someone else that way.
The girl from Yesterday.

re- titled and re-wrote it.

Girl who got away
Verse
I’ve been chasing shadows
Looking for ghosts
Mirages I watch fade.
I’ve been searching faces
Hoping I’d find
The girl who got away.
Pre chorus
I catch a glimpse now and then
Of her familiar smile.
I see her then she fades away.
I’m happy for awhile.
Chorus
She comes to visit but never stays
The girl who got away.
I try but I can’t forget about
The girl who got away.
Verse
I’ve been having trouble
Finding myself.
Forgetting how things were.
I’ve been going crazy trying to find
Another girl like her.
Pre chorus
I catch a glimpse once in awhile
Of her familiar smile.
I see her then she fades away.

Just thinking. A songwriter I like uses 'ghost' in their lyric as memory of a past lover.
Thinking this I added a bit to your first three lines:

I've been chasing shadows
But only finding ghosts
And mirages I watch, fade away.

Keep or sweep of course.

Also, new here, I'll write something later and would appreciate you grabbing some of the lines and adding to them.
I find that gets the feedback gets the things swirling around some and adds to perception.

Bill