Need an advice. Youtube faceless channel

What to do if I create content in a gaming niche (10 minutes + long videos) . I started 3 new channels and uploaded videos every day for 20-30 days and in all channels the same picture. The channel started to grow to 200-1000 views per hour and after 20-30 videos the channel is dying and the views falling almost to zero.What to do... trying to search for a new niche, create another channel, or trying to improve my content and upload 1-2 videos per week to these channels?