Sorry for misunderstood, here we are professional seeking for "Exchange" or hint, didn't mean you are useless nor wrong, you welcome but just too early to interact here.
I was trying say to you this channel is wrong for learning when at too basic level, I suggested you college channel where you can interact other pupils and learn from what we teach.
Remember I am not paid to teach for free nor other can do and never we can do homework for free, this sound as stopping teacher/professional work like me or colleague at other sides.
(ZEN) Also it is useless and bad to criticize your lecturer, in my point of view still is a colleague and when you as pupils do a criticism to my colleague I can think you do same for me...
Sometimes I see some my colleague perform bad but remember deontological ethics tell me to not confirm and forever protect them in front of an attack right or odd. (IEEE rule too)
Also please be coherent, I sent you a couple of link where you can find help, Pyroedu and FPGA4Fun both have teaching materials and discussion on how to build counters, Deeds site devoted to teaching has material on topics.
Both book and course too start from Logic gates, they use a special (free) tool customized for teaching Logic design.
What is wrong with lecturer or pupils has to be left behind your college, please avoid do it in public, at least do in PM.
Regards