Found a lady who’ll explain it better then me, but basically it’s an “E” that is pronounced in a more rough and brutal way 😂 https://youtu.be/w9hogVBFECQ

Ы is nothing by the way — we’ve got two letters that don’t have a sound at all 🤣:

Ь is used when you want to make the consonant softer while Ъ is for making it sound rougher. 🤯

Also #[2]​ is studying Russian now, so he might have some hints for you in terms of best studying materials.