Domain Names Provide Credibility
There are 3 criteria a web visitor observes when visiting a site: the site's design, content accuracy, and domain name. The domain name provides credibility. The domain extension is particularly important for visitors seeking accurate information.
While only the quality and reliability of the name are important from the visitor's perspective; the site name is very important for the webmaster in terms of SEO. Domain names containing keywords are particularly important. Besides, it can be difficult to find a domain with a desired word. Therefore, the domain name consists of either abbreviations or a long name.Domain Length Reduces Memorability
Generally, a long domain name attracts the visitor's attention, but the domain length reduces memorability. This leads to your site being weak in terms of SEO.
Another factor is extensions like com, net. The com extension has been used since the beginning of the internet. Extensions added later, like gov, edu, are also important for Google. Generally, com extensions are perceived as high quality, but the importance given to sites with extensions like co, us in the market is less. Therefore, com and net are more preferred to attract customers and provide reliability. Otherwise, there is no disadvantage in terms of SEO. 
