My suggestion is what will protect your voice in the long run.

Actually singing well loudly, and safely, requires you to move the air over your vocal cords very fast, which isn’t something most people do intuitively.

But singing quietly with good tonal quality also requires a ton of fast moving air, and won’t work without it. By making that muscle memory, you can then safely sing loudly.

Breath control is crucial to any wind instrument, voice included.