The advantages of franchise stores are: a certain brand, mode and mode of operation are relatively perfect.
Disadvantages: Generally speaking, the entry threshold is high, which requires a certain amount of funds. The mode of joining may not be suitable for you and your place, and it is slow to return to the original.
Advantages of opening your own shop: you can play freely, the requirements for funds are not so high, and even if you lose money, you won't lose much.
Disadvantages: I will be very busy because I have to plan a series of things, including purchasing.
So in general, if you just have money and nothing else, it's better to suggest joining (the franchise store here means formal and legal). If you don't have much money, but you have certain advantages, it is better to suggest opening your own shop.
In a word, opening a shop is risky, so you should know clearly before investing.