Post your hero roster and your SH (and buildings) and folks will chime in with thoughts for you.
Also, I second the spend a little money thing (if you haven’t). I’m somewhere around $60-70 and have every 4* except for 2, a ton of useful duplicates, and about 10 5*. I purchase only deals that are 100 gems per $1 USD and have an ascension item that I need with them. If you’ve enjoyed the game for 4 months, it is also a nice thank you for the Devs as well as a boost to your team.
And I use those gems usually to speed up chests or building completion (at least until I finished my 4 TC20’s). Only recently did I spend them on summons trying to get Zeline. That said - depending on your heroes some summoning may be a good thing.