So i'm a beginner so i may be completely wrong on this and messing up pretty bad but the strumming pattern for verse 1 and 2 i just used a single downward strum under each chord and then the pre-chorus and chorus i did dudu-d?? Idk correct me if this is wrong please but it sound kinda good

Sounds pretty great although I can't get the right strumming pattern. Any ideas on that?

Right enough chords, but your lyrics are off. For example, you have "Come xxx erating". I don't think "erating" is even a word. The lyric there is "Commiserating". One word. There are other problems with that, too.