My advice is, first of all (if one wants to achieve something of this type), to focus mentally on what one wants to obtain from the drum sounds, whether they are acoustic, electronic, or hybrid; by hybrid I mean those obtained by recording noises and "converting" them into kick, snare, hi-hat, etc. (as they may be understood), and here I mean perhaps already having in mind (as sometimes happens with instrument sounds) one or more sequences, but it is also possible to create work-in-progress patterns while practicing, as a second step, though it doesn't necessarily have to or cannot be done beforehand,
the creation of custom sounds; this is something I have often done before preparing electronic music pieces, because even a single particular percussion sound, or one created by ourselves,
sometimes provides further ideas on how to use it with the instruments we would like to use, and fuels subsequent ideas.
Therefore, my inclination is to use "standard" sounds, but in an unusual way, at least 50% of the time; otherwise, to make new sounds with anything that can be useful for this purpose (once I made a hundred recordings with a condenser microphone, with every type of object whether it had resonance or not, and they were useful to me for several tracks).
As for how to create a decent drum loop, the discussion here is like writing for other instruments: there is no one way, there is your taste just as there is the taste of others; it is up to you to find what satisfies you but at the same time is not "predictable," which I think is what you mean; then it always depends on the type of music you make. I shape everything based on what I want to achieve, and I must say that I certainly do this much better than in instrumental music, where I still have some gaps (also and especially for the usual reasons, those who know me a little know what I'm talking about); often I then hear loops in the software I use, but even if some are not bad, they are still recognizable by the effects that were used, and over time they lose effectiveness precisely because there is no "craftsmanship" behind them, but rather a finished product that is used as-is (literally: 'cooked and eaten').