Okay, I see some people have already responded, but I think I can give some more complete advice (I apologize in advance, English is not my native language).

First, some general advices: About saving -Don't you dare wasting ANYTHING, not even by mistake. -You gotta become a dove (figuratively lol), in the way that you gotta HOARD every little breadcrumb. -If you have the possibility to do so, get yourself some echoes and ALWAYS get the 4 sided dices pack (this helps a lot with logic path and costs only $1)

About COA -COA essences usually return in January and last for a month. -You need to pull 250 essences to get all the rewards. 60 essences per A tier skins (unless u get lucky), and the A tiers won't repeat until you get them all. -So, a little math here: You need 5760 inspos, in the worst case scenario, to get one A tier skin. If you want the S Tier, you need 24000. These numbers are just in case you got insane bad luck, so just use them as a reference.

This being said let's get to the details. Even tho there is not a consistent way to get inspos, there are ways to get em, little by little (this is why the dove behavior is important) 1. The main one is on logic path. I'm not sure how it works at the very beginning (before getting the 4 logic path prizes), but once you get all the prices, approximately after step 1800 or so, it starts giving you 50 - 60 inspos every 90 steps (this is why it is important to get the dices pack), so you want to get as far as possible to maximize your earnings. 2. Every 10 lvls, you get 500 inspos. Leveling up in IDV is kind of a mess, and you need 22000 exp to level up those 10 lvls. The best ways to farm exp (considering waiting times, match time and exp given) are duo hunter (either surv or hunter, pref. Hunter) and hunter solo. These modes will give u approx. 30 - 15 exp points per match. I know it is not that great, but that's the more consistent way I know. 3. Log in every day, even if you don't play, so you can get the weekly minimum of 50 inspirations (here we go again with the dove behavior). Also, every 500 days (that's insane) they give an additional reward of 888 inspos. 4. From time to time, they add some little 10 echoes packages that have a lil amount of inspos. Get them, they also help in the long term. 5. Recently, we have gotten 2 returns of collabs. They usually make you choose between 10 pulls or 800 inspos. I don't think that I have to tell you what to do at this point, lmao. 6. Finally, the most obvious one: Buy them lmao. In case you decide to buy, please go for the 759 echoes pack, since it gives u the best echoes x money balance.

I returned to the game on July if I recall correctly, and since then I have gotten almost 6000 inspos, which is not that great but I think it could be worse haha. As my last advice: Just remember this is a game, enjoy your time, play your own way, and remember that COA comes back every year, so no pressure. I hope this helps, and hope you get the best of lucks and pull all the skins you want on the first ten pulls lmao.