First of all: Didn't you already ask for advice? I remember a really lucky guy with Elizabeth Sophie Mia Corneria and other good units and you show those on your images

Secondly: Your main team should be your "ready for all" team, it should consist of 2 soldiers (for early rushes and UP generation), 2 archers for flying enemies, 1-2 witches for heavily armored enemies and or highly defensive flying enemies, 1-2 heavy armors to create choke points for weaker foes or tank high attaking enemies, 2 healers (i see you have Flamel and Ellett plus Camila but priest warriors are niche in a way that they are meant for maps with few ranged spots and since they are a hybrid class their stats are lower than those of their parent classes: less Def than HA and less AT than healers, 1-2 mages for magic AoE (i see you are using Mikoto for this role with Mel for Phisical AoE, Mikoto is a really good unit that becomes even better after AW and her SAW lets her do 5x her AT as true damage and that is huge in this game with later enemies that have both high def and mr, i have Mel on my main team and she is good to have, i don't use her as often as mages but there are cases when magic AoE simply wont cut it) and finally 1-2 duelists/gankers (i recommend bandits if you get a plat+ but i see you have Dahlia, i don't have her so i don't know how good she is but she has risk life II pre-cc and risk life III post-cc so a regular old bandit if you ask me, you rolled both lilia and sherry for magic duelists, Lilia is a tanky princess after which gets better at her role after AW where she starts regenerating health at a rate of 24hp/sec that triples on skill activation (so 132hp/sec for 30-40 seconds depending on skill level) while sherry is an offensive princes, when AW she gives all gold silver bronze and iron units on active team a 5% boost on AT DEF & HP so she can boost you teams real nice and once she is SAW she can attack everything on range with a really high AT value

All and all you have good units but where are your silvers? i have a lot of AW units but i still use 1/3 of silvers on my team, they are priceless for early rushes and early deploiments; i sugest you focus on leveling your main team fully pre-AW (so mikoto to 80 plats to 70 golds to 60 silvers to 50) and then start taking more diffucult maps like the dessert ark, just so you know if you have trouble with base scramble I, Base scramble II is a difficulty peak even harder than BS I so even if you pass BS I now you will need to stop and level you units once you reach BS II