Algorithms are hard. Some advice on learning stuff is that you only understand something when you can code it, which has some truth behind it.
Recently, I’ve been trying to learn some algorithms, and the pseudocode sometimes is a bit hard to read or visualize immediately. So luckily I’ve ran into a site VisuAlgo (https://visualgo.net/en), which is an interactive tutorial on foundational data structures and algorithms that I’ve found to be helpful.
Good luck!
Edit: There’s a forum post on hopefully helpful resources on learning data structures and algorithms Help Visualizing Data Structures and Algorithms