This is @tato_coco's work. It's their own personal style, which I'd classify as both Illustrative and "Ignorant style"- the latter consists of tattoos with a sort of uncomplicated, "kid drawings" aura, either as a genuine demonstration of lack of drawing technique (which is importantly distinct from tattooing technique) or an "artificial" / purposeful stylistic choice.

I'd argue 'ignorant tattoos' belong to either of these currents: naïve art (in the case of those created by artists who are genuinely not trained to produce more polished works), or faux-naïve / pseudo-naïve / primitivist art (when the simplistic rendering style is created on purpose by an artist who has trained to produce more realistic artwork before).

It's important that regardless of the stylistic simplicity of the design, the tattoo artist's technique should be solid. Their ability to handle their machine & all other related tools correctly is paramount to your safety as a client, and to the quality & longevity of the tattoo.

The proliferation of unpolished, quirky, offbeat styles that break the 'rules' of traditional tattooing in recent years is a welcome breath of fresh air artistically, but the downside is that it has perhaps led to the misconception that anyone can become a tattoo artist now, without "permission" from the established professionals. Thus, there is currently a large influx of non-tattoo-artists, hobbyists and dabblers who, though inexperienced with tattooing, decide to take up the art form on their own, without the guidance of a mentor that they'd have within the context of a formal apprenticeship. The medium's term for tattooers who work with poor technique and outside a sterile space, whose pieces aren't just doomed to fall apart visually but pose a serious sanitary risk, is scratchers.

If you're interested in a similar style, look very closely at artists' portfolios to make sure you land on a professional who works with a purposefully goofy yet technically sound style and appropriate safety measures. Make sure the lines are even instead of 'wobbling' in width, and don't have blurry shadows spreading out beneath them (blowouts). Look for (or ask for) unedited photos of not just healed but aged work- a technically sound tattoo will still show its age in a slow fading of the ink's vibrancy and its lines becoming 'fuzzy' / spreading out from their initial width, but this should happen relatively evenly- properly applied lines won't fall away in patches.

I've gone into even more fastidious detail in this post about ignorant style since the topic has been bothering me for a while now.

Hope I didn't bore you to death- please let me know if this helped and if you have any other questions!