An important ranking factor are the signals of Google's users. If they consider your TLD as trustworthy and suggest to be led to the target of their search, the click rate on your links increases. Thus, your ranking in the SERPs increases as well. A high bounce rate, on the other hand, lowers your ranking. If you convey to the visitor of your website, for example with the top level domain .support, that he can get help immediately and that you can offer him a service, then he will click on your link faster.