Many species in nature can be described as generalists or specialists. Generalist have broad diets and/or live in a wide variety of environments. Specialists, on the other hand, have very specific diets and/or live in only in a specific environment. Now, specialist tend to be really good at what they do, which helps them to compete against other species. Unfortunately, however, their specialization means that changes to their food supply or environment puts them at a high risk of extinction. And naturally, the inverse is true for generalists.
Now, there is no right or wrong way to play Eve (assuming you don’t break the Eula). You can PvE, PvP, play solo, play in groups, engage in semi-passive activities, or activities that require a lot of focus and high CPM’s, you can roleplay, ignore the lore, try to screw over everyone you come across, fly according to a bushido code, and so on -hell, we even have speedrunners. But, all of that being said, if you are specialist in Eve, you are probably going to have a bad time at some point or another. Eve is under constant development; which means activities, ships, and mechanics are constantly getting buffed and nerfed in an attempt to balance the game and shake up the meta (to keep older players interested). So, on a long enough timeline, every activity, ship, and mechanic can expect to see a nerf.
Unfortunately for you, you came in right at the end of a feast for miners. The Rorqual Buff, refineries, and moon mining gave miners plenty to be happy about for a while. Unfortunately, CCP was a little too generous, which lead to a crap ton of ore being mined, capital proliferation, and too many ships becoming too disposable. So, now it’s famine time for the miners.
Personally, I recommend you keep looking for other activities that might tickle your fancy. Like, I have played for long enough that I have seen several of my activities nerfed (and buffed). But, I’m a generalist. So if one thing gets nerfed, I just focus more on other activities (and also try to see how I can profit from the changes). However, if you are dead set on being a mining specialist, you should try to hunker down and wait out the famine. Now, to be clear, I don’t expect a return to feast conditions, but CCP has said that they will make moon mining worthwhile again. Unfortunately, I can’t tell you how long that will be, but given how bad things are right now, I can’t imagine that they will let this go on for very long.
So, maybe park your mining stuff in an NPC station for a while, and keep trying new stuff. I’ll link a chart for you.
By the way, it seems like you made some decent progress. 4 months old and you already have a freighter and an orca? Not bad.