Im writing a song but need tune?

Here are some tunes that you could try:

1. Verse 1:

G, Em, C, D

2. Chorus:

G, Am, C, D

3. Verse 2:

Em, C, D, G

4. Chorus:

G, Am, C, D

5. Bridge:

G, Am, C, D

6. Chorus:

G, Am, C, D