Don’t worry too much about fighting early. Build your park out to maximize coin production. Don’t waste cash or dna(unless your paying to play, then DNA probably will not be an issue For you later on).
Use trade harbor. There can be some great deals there.
try to do the daily drops to diamond level. Then buy the diamond level pack(About $4000). You get some great Dino’s there.
Use the loyalty points to get the 10000 point solid gold packs. You get great Dino’s out of it.
If the code 19 challenges come back, do them. It’s free Super hybrid DNA. You will want as much as you can get of that to create those Dino’s.
Eventually you will be using all 4 hatching chambers. Try to keep the first one( free Activation) for fast hatching Dino’s. Use the other 3 for the gold and hybrid Dino’s that can take up to 7 days.