I get killed by monsters very often. Am a beginner in Minecraft.
I never really get any further because I keep losing my things, etc.
Would it be better to build a house during the day or hide in hell?
In the beginning, build a bed as quickly as possible. Then as soon as it gets dark you can go to sleep and skip the night.
Can hide in hell or look for sheep in the beginning, build yourself a bed and go to sleep at night and skip the night.
On the first evening, it's best to hide in a hole.
You should craft / find a bed as soon as possible and then skip the night in it.
So kill the first two / three sheep (of the same color) that you find or if you find a village, take one of them.
Even if I've been playing Minecraft for ages, I always hide in a self-made hole the first night, fry food or just wait if I don't have an oven or something.
But of course it is best if you make a bed (3 wool of the same color + 3 wooden planks) and ski the night away.
If possible I would get myself a bed and then build a house to always skip the night. But if you don't want to sleep but farm for ore then I would dig myself in and down because if you have enough wood all you need is to play Minecraft underground, e.g. Ores, lava and stronghold.