Making a website for small business, need advice.

Hi everyone, im currently building a website for my new business. As front end development does not trouble me at all, I need advice on how to handle payments and buying overall. Should i just go with shopify or is it a possible thing to try handling payments independently? Looking for an answer from someone who either has a long expirience using shopify and can share his opinion or someone who coded his own backend and can tell me how big of a task and how convenient it is considering that i work alone and Im one year into computer science collage, willing to learn and id like to make it my programming portfolio.