Forgot Lockscreen Password Help!

I am not sure what you mean by using a different password? Is it Passcode? Do you see something as shown in the pic below?

In that case...

Following this process, the only way out. The steps given in this link will help you reset the passcode -> If you forgot the passcode for your iPhone, iPad, or iPod touch, or your ...

Android to iPhone

1. You may --> Move from Android to iPhone, iPad, or iPod touch - Apple ...
2. If that fails or you do not want to attempt or have already set up your device. then...You can still transfer these data.
   1. Photos & Videos --> Upload to iCloud Photos using the same Apple ID that you have used on your iPhone. After upload, enable iCloud Photos on your iPhone. That's it.
   2. Contacts --> Contacts are not stored on an iPhone nor on SIM, they are synced to  Google, iCloud, AOL, Exchange, Outlook, Yahoo or any Other. Upload all your contacts to any of the above email client-server.
   3. Notes, Reminders, Calendars --> You may sync all these from any of the email accounts that you have. they are synced to  Google, iCloud, AOL, Exchange, Outlook, Yahoo or any Other. Upload all your data to any of the above email client-server.
   4. Any Specific Files --> Upload to Cloud Drives (iCloud Drive, Google Drive, OneDrive, DropBox, Flickr, box, AmazonDrive, Adobe Creative Cloud and Use Files app on iPhone
   5. Apps --> In any way they have to be redownloaded using the App Store.
3. SMS/MMS - Look for third-party apps that claim to transfer SMS/MMS from an Android device to an iOS. However, these apps/software has the risk of data being compromised and which may or may not safeguard your data. Be well informed about the way the software will handle your data and then you may select the app/software
4. WhatsApp --> My experience says you can't transfer because on Android, WhatsApp, chat history is not stored on iCloud, on iOS it is.
   1. That may be possible with third-party software. Warning!; WhatsApp data through third-party software has the risk of data being compromised. Because the data will be churned through third-party servers, which may or may not be encrypted. Be judicious while selecting the software and taking this call.
   2. Having said that, WhatsApp is not an Apple product. Contact the app developer here --> App Support or WhatsApp FAQ or Restoring your chat history - WhatsApp FAQ
5. Shazam Account --> Access your Shazams on all your devices or online - Apple ...