If I can get by with a single hero I often run
2x 2* mobs
1x white wolf
1 carry hero
Partly because gold wolves are somewhat rarer. This way I have 2 3* mobs to feed to my white wolves and later. It really just depends on what I have.
Hopefully you get some good heroes and artefacts soon. Join a guild to get daily aid if you can. It also allows you to buy molagora and such from the shop each weak.
Prophetic Candlestick
Ancient Sheathe
Daydream Joker
Are some 3* artefacts to keep an eye out for. Prophetic Candlestick is great for Angelica if you run her in the front, tanking position. As she tanks hits she has a chance to decrease cool down and get her healing skills back up sooner. The other two are additional damage, the latter being most useful for enemies with heaps of HP (mostly later in the game but worth hanging onto a joker for now).
This is how I feel right now