I often wake up 2-3 times in the middle of the night before my alarm rings. I will also dream of many different types of dream which most are unrealistic everyday and can remember the dreams clearly after I wake up.
Hi User443, Thank you for taking your time to raise this question !
You may have to look into some of the situations you may have been facing that could trigger these vivid dreams that may not necessarily be realistic. You may wish to figure where your current stance of energy is leading you in your sleep patterns too. There could be many reasons triggering the multiple times waking up between your sleep cycle.
It is important for you to have good sleep quality and ensure that there are no electronic devices near you as they could interrupt your sleep quality.
I would highly recommend you the following resource to have a better knowledge of how you could improve your sleep 
Relax your muscles progressively, dropping you gradually into a deep state of relaxation through which sleep comes easy.
You could also choose to reduce your anxiousness by using this tool: