Have you looked at Conan Exiles? It's a much grittier take on a very similar style of gameplay. Having been around for much longer its content is tremendously more fleshed out but also quite overwhelming.

Whether you enjoy that though will probably depend on what you liked about Valheim. It is playable solo but is tuned greatly in favour of playing in a larger community. The combat is pretty clunky but not much more so than Valheim. It uses a large handcrafted world rather than a procedurally generated one.

I've been trying it to get past this huge content drought. It is definitely one of those games that won't pay out a lot of gratification until you've pushed past those first few hours to learn the systems,

It is on Steam but is also available in the PC version of xbox game pass if you have that. Be warned though, when I say gritty I mean gritty. Full frontal nudity, cannibalism, slavery. It treads very, very close to themes that other franchises wouldn't touch with a ten foot pole.