Here are some tips to increase your Snapstreak you just need to follow all the given steps -
1. Send Photo Snaps of your friends
2. Send Video Snaps
3. Be Consistent
4. Troubleshoot Snapchat if isn't working
5. Request to restore lost Snapstreak
Also Read - https://onlinegeeks.net/how-to-solve-tap-to-load-problem-on-snapchat/