Sript to unsave all saved Instagram posts. Uses Instagram private API by ping and its extensions to do the heavy lifting.

unsaver.py

from instagram_private_api import Client, ClientCompatPatch
from instagram_private_api_extensions import pagination
import json, time

user_name = 'UserName'
password = 'PassWord'

api = Client(user_name, password)

items=[]
for results in pagination.page(api.saved_feed, args={}):
   if results.get('items'):
        items.extend(results['items'])

print("Starting unsaving posts.....")

for i,x in enumerate(items):
   z = items[i]['media']['pk']
   api.unsave_photo(media_id=z)
   time.sleep(3)
   print("Unsaved: ", z)

@Suleman-Elahi Ok, I have already disabled 2FA yesterday. So how could I solve this? IG keeps notify me to change my password each time ...

You will have to wait for a few days...or you can use VPN with server in the same country as you. Or, if you can get your ISP to give you a new IP address then perhaps it can be solved.

@GetIt7788 open terminal in the folder where the unsaver.py file. And then run it like this python unsaver.py if it errors then tell me. It should work though.

403 forbidden likely cased for abusing the API. Try after using a VPN and make sure that account doesn't have 2FA enabled.