You are absolutely right. Raising money quickly is not an easy task, especially if you are targeting a large amount. You need to be creative and expose your project to many people through different platforms such as social media, websites, and even word of mouth.
Self-promotion is very important. People will not support or invest in something they do not know about. Create engaging content, explain the benefits of your project, and do not hesitate to ask for help or advice. Others may connect you with opportunities that you are not yet aware of.