Home page NOT on google search (sub pages are)

Hello,
So my website’s primecosplay.com,
when i searched “primecosplay” on google, the only link i found was my sub-page: “costume in stock & coming soon…”, which is good but I was wondering where did my home page go? (is it due to the customized home page setting of this theme —not enough content, that google don’t want to display my first page?)

(P.S. i can search my home page when i type in “primecosplay home”)

Please let me know how to fix it. Thanks. (P.S.S. how do i add text on the home page?)