What do you do with baby all day? SAHM

Ok so I’m very lucky to be a Stay at home mom. My baby is almost 6 months old , and some days I just feel so bad because I don’t know what else to do! I feel bad just sitting her down somewhere while I do whatever, I have the feeling that she needs to be entertained at all times, but I just don’t know what to do lol. Do people play with their babies all day?? What do they do at daycare all day? How much one on one time should we have? ETC?? Help! Lol