I need some help...anyone who knows how to do this...?

I am building a website for a church and there is something I would like to add to the youth section but do not know how. I use Homestead as a hosting company in which I cannot change. The site builder (from them) that I use to build the page does not allow for php files. First, I do not know or understand what that even is but I know that what I want to put on my "game" page could be tricky. I have copied and pasted a couple java games to go on there and they do not work. Is there anyone who can offer/volunteer their time to help me do this? It is a Christian website that does not ask for money or donations other than volunteers and this is a case where I need help. If anyone has the time to help me with this. It is much appreciated. I don't care if you are a youth who enjoys tinkering with programming, a student studying and needs some experience or a professional who is willing to put in the time. I can give more details on exactly what I want if you are willing to do this. It may be simple for you or it may be too much trouble, I don't know. Please email me at tiatia5 at yahoo if you have suggestions or can help. PLEASE! Thank you and God bless you.