Like, socialism is, and should be a constant revolutionary project, not just a static position.

If you try to put it that way, that then again opens it for others to add/remove as they feel like.
While I understand that socialism is not some hard program that can exactly apply to every scenario, there has to be some tenets of it that are defended well, to prevent a malicious actor from uprooting its base.

There's is. It's really simple: "From each, according to their ability, to each, according to their need." Anything else on top of that is philosophical.

My personal solution is simply that I don't subscribe to any *-ism and don't group myself with anything even if it tends to provide similar solutions in the current scenario, simply because in some other one, the group's solution might end up greatly differing from what I would consider acceptable.

This is a similar tact that I took when I was about 16-17, but I find that to be a very naive point of view. Regardless of whether or not you want to apply any label to yourself (which is perfectly valid) the material conditions of the system we live in will come down on you too. So you either end up in the "We are stronger together" camp, or you end up in the "Me and mine are what needs to be protected. Other people be damned" camp. And if you find yourself in the former, you most likely align with people who call themselves socialist, and if you find yourself in the latter, well then you're probably a bootlicker