That bungee net looks really cheap too.
I got this one on amazon.
The elastic parts on it are much thicker and tighter. Ride around all the time with my laptop in a backpack on the passenger seat. Doesn't move an inch even when going through rough road conditions.
I have a similar net in my rig
Powertye Mfg 15in x 30in Large Cargo Net Featuring 10 Adjustable Hooks, Tight 2in Mesh, Black https://www.amazon.com/dp/B002302CAG/ref=cm_sw_r_cp_api_fabc_2VfQFbSJ7Y2VM?_encoding=UTF8&psc=1
Get the Burley Travoy. Since it stands upright like a hand truck and has a very small footprint, you can take it with you anywhere (I do, even transit busses). It weighs less than 10 lbs. you can attach your gear with a cargo net or a simple laundry hamper from Target. I folds down small enough to fit in overhead storage in an airline.
Only downside is that the 12.5" wheels are made for sidewalk strollers -- not road and off-road bicycles so there is only one good tire in the world for it; the Schwalbe HS158 Wheelchair Tire and it has enough tread to go off road (mostly).
Once you start using a trailer you will never use panniers again.