Man....I'm not sure if I'll be able to help you cuz to be honest...I still have that problem till now
but um I guess some advise I can give you is just to keep reading other books and get inspiration from it...?.(Preferably really good writers who do know how to explain things so easily) Observe the way they write, the way they explain things (at least, that is what I do.) But don't copy them. Just see how they explain their point and try writing things yourself With that newly found info. And of course, PRACTICE. Practice as many as you can.
I'm so sorry if what I said wasn't any help...I am not very good with advise maybe you could try asking other authors here who are better than me, or ask YouTube, or google
Good luck! I wish you the best with your writing!