problems with impressions

i dont has getting many impressions despite the days and being a channel that is well positioned, this happens in the new videos because yesterday and 7 days ago I uploaded videos and they have not exceeded 10,000 views, something that the one I uploaded 2 weeks ago has almost 70,000, I don't know what's happening, the topics and thumbnails are good as well as the titles, although it seems according to my analysis that YouTube is sending the impressions to people who do not see the topics that I upload.