I'm lost and seriously need help with making my application responsive

like an idiot I designed my angular15 project on a big ass 55 inch 4K tv and forgot about the fact the app needs to fit on all screens and now I'm up diaria creek.

I'm a noob and I suck at css (i just know basic stuff).

I'm not lookig for somebody to do my homework cuzz like I said, I finished the whole thing and got all requirements completed except the responsive part.

I just really need somebody to look at my app and show me where I went wrong and how I can fix this ball of yarn.

Please dont reply about how great you are and how stupid I am for not knowing as much as some of you,
(in other words DONT BE A *beep*!!!) if you cant control your inner troll then please dont even involve yourself.

I left a link to my repository.

Thanks in advance!!!

https://github.com/jaytee-thomas/My-Tasty-Cakes.git