no admin panel??

Hello everyone,
I’m new to all of this. I decided to get a new template and mess around with things. It appears that I messed around to much to where I cannot login to the admin panel that should be url/wp-admin

what i did wrong was i was trying to change the website to be http://www.pilotscabin.com/blog and apparently i changed something that i shouldn’t. i’m looking to keep the page i have on there as a splash for http://www.pilotscabin.com/ and have a different template be my http://www.pilotscabin.com/blog