Implementing a vocal training

Hi everyone, I’ve always liked singing, but I want to get better and finally start practicing more seriously.

I can’t take real singing lessons right now, so I’m trying to train on my own at home. The problem is there’s so much stuff online, and it’s hard to know what really works. Some YouTube videos help, some don’t, and I often end up more confused than before.

So, I thought I’d ask here: Have you found anything that really helped you improve from home? Like a simple vocal training routine, a warm-up you still use etc I’m not trying to become a pro, just want to feel more confident and have fun with it. Thanks a lot if you share!