Hand-Drawn Whiteboard Explainer Video

I need a concise, engaging whiteboard animation that clearly explains a technical process to a professional audience. The feel I’m after is classic hand-drawn: marker strokes appearing in real time, subtle hand movements, no flashy digital effects... (Budget: ₹1500 - ₹12500 INR, Jobs: 2D Animation, After Effects, Animation, Commercials, Storyboard, Video Editing, Visual Arts, Voice Over)