Most important position

Hi everyone,

    I am a below average player i would say and i would like to improve my team, but wondering what position i should invest my coins in that would make the most impact.  I have around 300,000 coins, and love Myles Garrett, but figured DE would not be the most impactful to help me.

I'm running the basic teams we got with the bundle (Chase, Mcaffrey, Pitts, and on defence it's the one with Denzel Ward, etc.)

Would a great RB like Mixon have the most impact (because i love running/passing to HB), or i should get the help defensively by getting CB, FS, SS so the computer helps me stop some plays?

Thanks to all of you, and have a great madden season!!

At this point, just pick budget beasts because youll likely switch these out pretty quickly at the start of the year, especially if you are trying to keep up with abilities. 

Skill positions:

For my order, I usually choose D > O first in somewhat this order: 
QB > User > RB1 > SS > CB1 > WR1 > CB2> TE1 > WR2> FS > other MLB 

O: QB > RB > WR1 > TE 1 > WR 2 > RB2

D: User (either mlb/ss whoever you use) > SS > CB1 > CB2 > FS > MLB 

Both Lines are important too as well but were just talking skill positions. 
Oline is pick the heaviest dude with the most str/awr
Dline pick the biggest dudes with good finesse/power moves. Prefer if theyre both over 80/90 but the higher the both you can get.

Oh, i thought the QB was not making that much of an impact since i'm usering him, and if the WR/HB are open, it doesn't really matter.

Sounds like the QB/HB combo is priority