How to properly save a JPG for steganography

I am working on a simple steganography project that should allow to encrypt text inside the LSB of images pixels, i am using python and the PIL image module, it seems that i can correctly modify the LSB but when i open the output image the first 8 LSBs don't match the first letter of the text

First i convert the text to a binary string and terminate it with a byte of zeros

def text_to_binary(text):    # Convert input text into binary    binary_text = ''.join(format(ord(char), '08b') for char in text)    # Terminator sequence used later in decryption    binary_text = binary_text +"00000000"    return binary_text

then i encrypt the text like this:

def encryptLSB(text, image, output_path):    image = Image.open(image)    binary_text = text_to_binary(text)    width, height = image.size    if len(binary_text) > width * height:        raise ValueError('Text too long to be encrypted in this image, provide a larger image')    # The index of the data bit currently being processed    index = 0    data_done = False    for y in range(height):        for x in range(width):            if not data_done:                pixel = list(image.getpixel((x, y)))                current_data_bit = int(binary_text[index], base=2)                # Distributing the data in all three RGB values allows less noticeable changes in the final image                # we need to access the LSB of each of those channels and replace it with our data                for channel in range(3):                    # Set the LSB to the value of the current binary data                    pixel[channel] = (pixel[channel] & ~1) | current_data_bit                # Update the pixel                image.putpixel((x, y), tuple(pixel))                # Pass to the next data bit                index += 1                # if done with the text, set flag to true and exit                if index == len(binary_text):                    data_done = True    # Save the image    image.save(output_path)

To check if the encryption is succesful i try to read the first 8 LSB and see if they match the first character of the text

def readLSB(image):    image = Image.open(image)    # width, height = image.size    byte = ""    for x in range(8):        pixel = list(image.getpixel((x, 0)))        # The lsb is extracted and appended to the byte string        byte += str(pixel[0] & 1)    print(byte)

for example in the case of

text = "string"encryptLSB(text, "img.jpg", "out.jpg")readLSB("out.jpg")>>00010000

but it should be 01110011 as that's the s char binary rapresentation

What am i missing? has the jpg compression got something to do with this or is my code just wrong? should i save it in other ways? Thanks!