same thumbnail on multiple videos?

first off all sorry for my silly questions but i'm beginner right now and need help, recently i was testing thumbnails and find out that one of them working very well, so i decided to put this thumbnail on multiple videos and it worked very well, it is click bait thumbnail but it did not contains 18+ or misleading things, so am i under risk when i'm putting same thumbnail on multiple videos?

No risk involved but instead of using a similar thumbnail you should do some rendering over them to play safe.