It's a little hard to hear your voice over the volume of the guitar in this recording.
From what I can hear, I can say that you need a training program to strengthen your voice. You are straining to get to the F#4 and G4.
You need more support to help you sing from the diaphragm rather than the throat.
You have a decent-sounding voice. Properly-trained, you will do fine. Get started as soon as you are able. We all had to start somewhere. My only regret is how long I waited to get started!
Good Singing to You!