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I’ve seen most people bowing using the full length of their bow even if it’s for quaver notes, they try to use a lot of bow. Where as there are some people who only use like half of their bow even for long notes they squeeze it all into very short bow strokes.
How do you normally bow? Does it sound better when you try to use as much bow as you can? But if you use a lot of bow that means you have to bow fast to fit it in
You really should be able to do both, instead of habitually doing one or the other. Bow speed, bow pressure, and sounding point are your tools for achieving different tone colors and dynamics. Always using long bows is a bad habit, and so is always using short bows.
I would encourage you to experiment with different bow speeds and different amounts of bow pressure. A good violinist always considers how much bow to use to get the right tone color and arrive at the next bow stroke at an appropriate part of the bow.
I agree with Pierre and AndrewH.
There are plenty of books of beginners' studies that contain studies for long bowing and studies for short bowing. Here is one, recommended, example (and the Amazon preview is uncharacteristically useful!): psc=1
And since you will begin studying each étude slower than its recommended speed, that's all the more reason to use them to develop longer bowing where it's required.