There is a huge variety of pre-workout supplements. However, most of them will be based on stims, and there are a lot of issues with stim-based preworkout supplements. Hence, I would try to find some preworkout supplement that will not have stims in it. For instance, one such supplement is DSpark. It has no stims in it, so there will be no stim related side effects, and yet it gives incredible pumps in the gym with good energy. Ever since I have started using it, I never looked back to any other preworkout supplement, so I really vouch for it and recommend giving it a try.