[Python] How to put x-axis values in order

I have an Excel sheet with some players' heights/weights/ages etc. I'm trying to make a basic graph where I can show an average height/weight ratio and order x-axis from low to high? Sorry I'm just a beginner

import pandas as pd
import matplotlib.pyplot as plt
import numpy as np

var = pd.read_excel("C:\Program Files\currentnbaplayerslist.xlsx")
print(var)

x = list(var['Height'])
y = list(var['Weight'])

plt.figure(figsize=(10,10))
plt.style.use('ggplot')
plt.scatter(x,y,marker="o",s=100,edgecolors="white",c="green")
plt.title("NBA players' height/weight")
plt.xlabel("Height")
plt.ylabel("Weight")

plt.gcf().autofmt_xdate()
plt.show()


this is the result i get:


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