Data structures and algorithms

I'm new to programming and I started learning cpp as a first language, and I'm currently struggling to understand Data structures (sorting algorithms and search algorithms are kidna understandable but I didn't fully consumed it , but stacks are just straight outta hell ) and I feel lost , I don't seem to have a big problem with object oriented programming and file management so I'm I just stupid or DS is just this hard? , and is there any good coursess or YouTube videos that explains it good? And also a good oop explanation videos would help, thanks 😊 🙏

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