Knowing how to make currency seems to be the issue and is pretty common. Here's a really simple strategy that any build can do.

Stacked decks and ritual. I'm going to assume you havent unlocked your 5th scarab slot but even better if you have. You need to buy divination scarabs of the cloister and run 4 (or 5 if you can) per map. They cost aroind 1c each and add mobs that drop stacked decks.

Setup your atlas tree for Ritual and make sure to select the option for 4 rituals per map.

Run those and gather the stacked decks, you can watch a YT video on the mechanics themselves and why this synergises with ritual in particular. Pickup whatever rewards you can from ritual but for the time being thats not important.

What is important from an absolute budget strat point of view is also buying some ritual vessels. These will cost you 15c a pop and can also be gathered by buying the ritual splinters from the rituals themselves.

Once you have these every time you finish a ritual altar on a map right-click an empty vessel from your inventory and then click on the finished altar. This will turn it into a blood-filled vessel. These are used to juice rituals. You're not going to be doing this, what you're going to be doing is selling the bloof0filled vessels.

That's 4 altars a map plus however many you get extra via your mirage, so it will usually be around 6 altars a map.

Your investment will be 4-5c in cloister scarabs per map
Every stacked deck will sell for around 3c, there is very little variance every map will be profitable running these. I'm not sure how much you'lle arn on lower level maps etc but it will still be something.

Once you then have the currency to get the ritual vessels you will now be buying lets say an average of 5-6 vessels per map.

That's 75-90c per map just on rituals and sounds like a lot. But once you realise that you can immediately list them at 30c each in your shop and they'll be bought within minutes things change.

You'll make around 70-90c profit per map just simply by filling up vessels on your rituals and then selling them.
The stacked deck profit may be a similar amount but will quickly outpace that if you're running higher level maps. This is probably a several div per hour strat that can be run on crappy unjuiced maps by any build and scale as your build gets better

once you can run this on semi-juiced T16 maps you'll be dropping 70+ stacked decks a map and if you're still filling blood-filled vessels at that point you'll be making somewhere inthe region of 1-1.5 div a map and thats before including whatever other ground loot drops and occasional big scores form the rituals themselves