▲However, every coin has two sides. So does....
However, every coin has two sides. So does online shopping.
▲However, just as an old saying goes, “every coin has two sides”. ...also brings us problems. /...may also cause some problems.
However, just as an old saying goes, “every coin has two sides”. Online shopping also brings us problems.
▲However, just as everything has two sides,...also has many disadvantages.
However, just as everything has two sides, online shopping also has many disadvantages.
▲However, ...has its own disadvantages.
However, online shopping has its own disadvantages.
▲ one of the (dis)advantages is that...
Another (dis)advantage is that...
One of the advantages is that it's very convenient for people to go somewhere.
Another advantage is that it helps to reduce the traffic pressure.