seriously

I can't seem to get past the taproot coming out and seed splitting I seriously need help!!! I'm trying to just grow anything to get a technique together. I have some regular seeds and I'm having a horrible time smh. I wanna get some good quality seeds but I don't want to waste my money as money...

About two weeks into flowering. Feed as usual, that is w/ soil, feeding organic "PlantMagic Oldtimer" according to bottle, 3ml per L as I always did. I didn't have this problem the previous year, aside from the usual yellowing of lower fan leaves. But THIS is extreme - something is seriously...