People who have gone to a lot of Texans training camps what’s the deal with auotgraphs?

I went last year and had a ball and a sharpie and was able to get a decent amount of autographs . However I was wondering if there are any sort of stratagies I should use to get the most amount of autographs this year . I also started to collect crds and would love to get some signed but I don't know how players would react since most people will want to have them sgned to sell them where as I just want some for my own personal collection . Anythng helps so please share some wisdom .