Hey,here some solution to vpn problem
2.take ✔️ at L2TP/Ipsec only
3. choose a server (the faster the speed ,the lower the ping)and make sure above the L2TP/IPsec got a green ✔️
4.open setting and find Vpn in your phone
5.add a new vpn in it
6.remember to choose L2TP/IPsec,then paste the ip adress (my Username and ipsec preshared key both is vpn lol, easy to remember)
7.save. Done !!!
Hope this can help you solve the problem.
Feel free to ask me if you got any question.