Selenium: If user follows this bot sends them a pm that asks why they followed. How?

[composer]

im trying to make it here: https://replit.com/@upsideumop/ydidufollowme
my follower page is here: https://musescore.com/user/35155956/followers
someone told me to use my code, then do this:
the code:
list_of_followers = [# get this list(I assume you know how to...)]

new_followers = [# create another list of new followers that]

for user in new_followers:
if user not in list_of_followers:
send_message() # function that sends messages.
list_of_followers.append(user)
new_followers.pop(user)
, but i want to do it with selenium and that person didn't have the time. can you help me?