Of course I could not possibly anticipate the professional situation in Croatia, but maybe the most important thing to always do is to "beef up your catalog."
In the end, "Sears & Roebuck Company" succeeded – alas, these days are now gone – when you could find absolutely anything that you could possibly want, somewhere in their catalog. (Literally ...) "From tombstones to complete houses."
Oil producers have learned the same lesson: it's far better to have a stable of a few hundred wells, most of which can be relied upon to produce a small amount of oil every day, than to gamble your future on the dream of "re-creating Teapot Dome."
Maybe the most important aspect of today's market is that it really costs you very little to produce another commercial product – whether it is similar to the last one you made or not – and to introduce it to a world-wide market. In such a market, having little or no "barriers to entry" now, volume (of the highest-possible quality product that you can now manage ... with all the diversity that you can manage ...) is essential. "It's a numbers game, not a number-one game."
Also: "even though you are in Croatia and I am half-a-planet away," any PRO worth its salt should be able to ensure that you will get paid, if I play your tune. What amazing times we now live in!
"I wanna quit being a computer consultant and become a composer and arranger at age fifty-nevermind."
Logic Pro X, MacBook Pro, 88-key MIDI controller.
Just south of Chattanooga, Tennessee, USA