So I need some help with my team.

I just play madden like a regular player. But I would like to better utilize my team with chems, abilities, X factors, and strategy/playbooks

any advice on upgrades would be appreciated  QB 88 Elway HB 90 Gurley FB 87 George kittle Theme builder TE 88 Dave Caspear/ 87 Kittle WR1 91 Herman Moore WR2 89 Holt WR3 90 Brandin Cooks WR4 86 Julio LT 91 Joe Thomas PU LG 89 Brian Waters C 88 Kevin Mawae RG 89 Larry Allen RT Heavyweight 87 Lame Johnson

FS 91 Joyner SS 91 Adams  Backup safety 88 Merlon Hanks CB1 91 Ramsey CB2 90 Xavier Howard CB3 91 Chris Harris jr CB4 89 chrisallister LOLB 88 PU LT MLB1 91 Urlacher MLB2 90 Luke  ROLB 90 Brooks RE1 89 Donald PU RE2 88 Mack DT1 87 Fletcher cox DT2 MF 88 Allen LE1 90 Strahan  LE2 87 Von miller Rotational rusher 87 watt