Is it hard to get monetized on YouTube?

It completely depend upon the type of content you provide and the quality of content. If one user like your video it start YouTube algorithm start showing that video to others. The video get viral and people start subscribing your channel. 1000 subscriber and 4000 hours of watch require to monetize YT channel.

No, it isn't.
The only thing that matters is commitment.

You will succeed if you are dedicated and receiving 10–50 views every video for at least 3–4 months does not demotivate you.

Keep in mind that YouTube requires considerable commitment. There's no sense in building a channel if it's not going to be used.

If you think optimistically, you will undoubtedly succeed. You will never succeed if you think badly. That's all there is to it!

To earn money from YouTube, first you have to go to YouTube and create your free YouTube channel there. After this you have to do the necessary setting of your channel, like to keep a good name of your channel, upload a good profile photo of your channel, write your channel's bio. After this you have to keep adding videos on your channel based on the niche you choose.

After completing 1000 subscribers and about 4000 hours watch time on your YouTube channel, after that you have to apply for Google Adsense. After getting the approval of Google Adsense, when someone will see your video, they will see an advertisement before the video. That's the only thing you will get money for.