If you are struggling to afford the software, start with the educational version or explore open-source alternatives. Your career and your computer will thank you. To help you find the best path forward, could you tell me: Are you a or a professional ?
You can often request a demo or a limited-time trial to test the software for a specific project. Open-Source Alternatives: Depending on your needs, tools like QElectroTech (for electrical) or (for logic circuits) are free, legal, and safe to use.