Instantiate objects in given range

I am trying to Instantiate objects on the right and the left side of the player but not in front of it. ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
So let’s assume the player’s transform.position.x value is “0”.⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
I want to Instantiate the object between X values of -250, -50 or 50, 250. ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
I could use Random.Range(-250, 250) but this will also include the range between (-50, 50) which I don’t want to Instantiate anything. ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
Also sadly most of the time numbers are not symmetrical as in my example, they are more randomly, like (-122, -30 and 40, 200). ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
What is the solution?

Okay took me some time but I actually achieved to do it myself.
For anyone who needs the same thing here is the function I created (random number between two different range)

public float RandomRange(Vector2 lowerRange, Vector2 upperRange)
{
    float realRange = Mathf.Abs(lowerRange.y - lowerRange.x) + Mathf.Abs(upperRange.y - upperRange.x);
    float x = Random.Range(0, realRange);

    if (x <= Mathf.Abs(lowerRange.y - lowerRange.x))
        return Random.Range(lowerRange.x, lowerRange.y);
    else
        return Random.Range(upperRange.x, upperRange.y);
}