My gameplay was random too. I noticed the bar can sink too low if you pull out too many rods. I had to restart several times. Then I was able to keep moving easily.
This is an interesting idea. Since you are a new member and I see how you strive for a variety of styles and ideas for levels - I really want to commend you for that! And you are also great for striving to improve and correct mistakes - this is also very commendable. For this reason, I think you deserve 5, and I wish you inspiration and new ideas!
Spoiler The whole thing can be picked open by manipulating the blocks before they drop, just so you know