Something tells me you didn't try ALL the spells, and you sound kind of "new" to magick, maybe try the basics before diving straight into spells? And try to be a bit more confidant in you abilities, if your just doing a spell to get it over with and see if it will work, of course it won't work, you have to have some kind of reason, maybe check the "newbies" tab for suggestions.
If you wanna become a spell caster, learn the basics, memorize them.
Know them by heart, cause they tell you all you need to know on how spells work, how to modify spells to work better for you, and how to write them from scratch.
Colors and their meanings
Moon Phases and their meanings
Days and their meanings
Hours and their meanings
Herbs and magick Tools (Stones, wands, altars, ect)
Astral Projection and the Planes of Existence
Charms and Chakras
If you skip, don't get surprised when you flip and fail ;)
ALL the spells? doubtful, their are a lot of spells that won't work. if you tried any to change your appearance, make you fly, travel through time, levitate, and so on, they won't work. if you tried a luck spell, like light a green candle, it does work, but if you just read a couple words off the screen, lite the candle and went about your day, then it won't work either. you need to put more effort in. you need to meditate for a while to clear your mind and center yourself. then you have to charge with energy, and focus it into the candle, thinking about the wonderful things good luck will bring, maybe even think of a green glow around you. finally, light the candle and as it burns, watch the flame, still visualizing the good luck you will receive and when you feel ready, say the chant.
another thing you need to factor in is the moon phase, since magic is governed by the moon to a fair degree and it can effect the outcome of the spell. finally you must also put in some effort, say you cast a job spell, you should fill out a job application or two.
Be very careful when casting spells too, and they don't always work when you want them to, and if you don't do them with care, they can come back to you, it's not a thing you do and say it's done. And no I don't think you have done ALL the spells there are THOUSANDS ! Don't abuse what you have been given ~That's my advise to you~