How to apply ransac multiple times?

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Python

I have a point cloud stored in a text file in the form of x and y . I need to find multiple lines representing each side for the shown point cloud using ransac so that I can split the points representing inliers for each line. How can I do that using ransac in python ? The code I tried gives me bad results! So I want a better technique

What I have tried:

import matplotlib.pyplot as plt
import numpy as np
from sklearn import linear_model, datasets
from skimage.measure import LineModelND, ransac
import pandas as pd
import math
def plot_ransac(segment_data_x, segment_data_y):
    data = np.column_stack([segment_data_x, segment_data_y])
    model_robust, inliers = ransac(data, min_samples=5,residual_threshold=5, max_trials=500)
def distance(x1,y1,x2,y2):
    return np.sqrt((x1-x2)**2 + (y1-y2)**2)
x,y = np.loadtxt('D:/Point cloud data/Data mabna 4/Data_without_RGB/Downsampled/Walls_only_downsampled_5cm.txt', unpack=True)
x_data =  np.array(x)
y_data =  np.array(y)
x_segments = []
y_segments = []
distances = []
start = 0
for i in range(len(x_data)-1):
    distance_to_point = distance(x_data[i], y_data[i], x_data[i+1], y_data[i+1])
    distances.append(distance_to_point)
    if distance_to_point > 5:
        if i-start>10:
            x_segments.append(x_data[start:i])
            y_segments.append(y_data[start:i])
        start = i+1
    if i == len(x_data)-2:
        if i-start>10:
            x_segments.append(x_data[start:i])
            y_segments.append(y_data[start:i])

# plt.plot(x_data, y_data, '.', color = 'grey')
for x_seg, y_seg in zip(x_segments, y_segments):
    plt.plot(x_seg, y_seg,'.', markersize = 5)
#     plot_ransac(x_seg, y_seg)
plt.axis('equal')
plt.show()