If you are new, it may be that you simply don't have enough knowledge to successfully cast a spell, if this is the case looking at some of the pinned forum posts in the general forum can help, these include:
do you know the basics of spell casting? your problem might be you're not directing energy and visualizing properly. if you're simply reading off a piece of paper, going 'light candle, check, say "money money shower over me" ok, then let candle burn down. ok' then you walk away to let it burn you aren't actually casting a spell.
if, you read over the spell a few times beforehand, then held the candle for a few minutes, filling it with energy [you should feel a warm sensation traveling through your body and pooling in the candle] place the candle on your altar [or table or floor] light it, visualizing yourself receiving your desired outcome, say the chant a few times still focusing on your goal, and finally letting the candle burn while visualizing, then you are casting the spell correctly as spells are less about words and ingredients and more about energy and focus.
another option could be the spell itself is flawed in some way, be it the ingredients, steps, wording, or other variant. there's also the possibilities the spell either worked in an unseen way [you expected to win the lottery but were given extra shifts at work] you didn't put forth the effort [didn't accept the extra shifts] or for whatever reason the spell was unnecessary [instead of more money, you need to budget, so there was spiritual barriers stopping the spell]