What are the best tools to supplement Sketch

I am the only UI/UX Designer working in a startup firm. My design tool of choice is Sketch, having tried Adobe Xd and Figma before. I like it since i can get a variety of plugins which speed up the design process. My challenge comes in in the userflow and prototyping stages. I do all my rough wireframing on paper then design high fidelity mockups in Sketch. If i need to do a userflow based on these screens from Sketch currently I import into Overflow and do the userflow there. However i find that since I have quite a technical project with lots of different possible states of screens based on what a user clicks I cannot properly show those states other than by duplicating those screens and typing text explanation on the arrow itself.

Are the better tools that work well with Sketch for doing the userflow, that i can just import from Sketch without having to redesign the screens all together?