The best way to train sound to sound good while singing?

[CuapCuap]

Do you like singing? if yes, what song do you like best?
I really like to sing, the song that I like most is sad song. I like the feeling when singing it . sometimes when singing, my voice is less able to exert energy and I can't reach a high note. What do you think is wrong? Are there good training methods to improve sound power?

[sgdgiig123]

I like to sing, but I sing alone in the room lol. I like the Westlife group, songs like  My love, I lay my love on you, Soledad. Great 

[Eikocarol]

Everybody in this world all like sings which they don't want to sing in front of others people for some reasons.

[Squishy01]

I was a former member of my college choir, and some of the techniques I learned during our rehearsals are breathing exercises, humming, and pitch matching.

For breathing exercises, you inhale through your nose for 4 seconds then exhale for through your mouth for 8 seconds. Do this for about 2 minutes.

For humming, first hum notes with your mouth closed then eventually open your mouth. Do this for about 2 minutes.

For pitch matching, we always have a piano. The conductor plays a chord then you match it with your voice. We do this for like 5 minutes for each person. If you're alon, listen to piano chords and sequences and copy them! Hope this helps 

[AnodosCore]

Just like everything, you have to practice, practice, practice!

Train your vocal chords. Start by singing "Do (dough) Re (ray) Mi (me) Fa (faah) Mi Re Do" in a lower octave. Each word go up 1 note until you reach Fa, then lower 1 note as you go back down to do (dough). Repeat, but start 1 note higher on do (dough) than you did previously.

Repeat this until you reach a note that you can no longer make cleanly.

Do this 1-2 times a day for a few days, and you'll hear yourself able to reach higher and higher notes.

[DoraDoraDora]

Yep, I really enjoy while singing.
I like to open up a track and lyrics to it and just trying to sing like the author did.