There shouldn’t be any real copyright issues regarding the game ideas themselves (a lot of them are clones/revisions of existing games that have been around for decades).
You may need to check the licenses for any assets you use though, as I believe some are only provided under an educational license (meaning you’re ok using them for personal projects while studying but you may need to buy the full assets before you release commercially).
Regardless of whether you end up publishing the final product, I’d say that it is always a good idea to try and expand your knowledge of the material being taught. Adding additional content and polish to your games will teach you a lot and at the end you’ll have some very nice portfolio pieces to show potential employers if nothing else.