Online Ordering System With Lowest Fees (pick up orders)

Currently, my website is linked to order on chownow for pick up orders. It’s commission free but a flat rate of around $100 a month. DoorDash pick up is 6% commission with no flat rate. I want to explore options for online ordering, to be honest I want to completely get rid of answering phone calls to cut out the labor of both answering the phone and ringing up the transaction upon arrival. My POS system is clover but I haven’t integrated online ordering yet. What do you guys use for online orders?