Then it is more appropriate to choose songs according to the characteristics of your own voice.
Let's recommend some songs that are easier to sing first.
You should learn from fireflies in Yi Nengjing first. Although I am old, it is quite easy to sing.
You can choose some songs from Angela Zhang and Stephanie that are light and easy to sing, such as Certificate of Love, Willfulness, I miss him too, Invisible Wings, Dandelion and so on.
If you learn, you should listen more, master the tune and practice sentence by sentence. Don't remember the words yet. Mainly melody and intonation. Generally, you can feel a song after listening to it five times and ten times.