Does internal linking boost your targeted keywords? Say, if you had a webpage with 10 pages versus 10,000 pages?
Here's an article that you might want to read, https://blog.kissmetrics.com/commandments-of-internal-linking/
Proper internal linking with unique and relevant content help the visitors as well as search engine crawlers to index the inner pages in a easy way, hence improves webpage visibility.
I have a website which has great internal linking. You will not believe I am ranking for my favorite keywod on 1st Page within 5 Months. Internal Link building surely help but I think that should relevant to content.