How to get my bike on to Zwift

Here photo of the bike I use

I have gone to many bike shops and with no luck of finding a power metre for my bike.
I have a Schwinn Prelude 14 Speed Road Bike.

Anyone knows what the best way go about getting a power metre for the bike?
I was thinking of getting smart wheel on trainer

Hi there, if you are getting a smart wheel on trainer like a kickr snap, then you dont need a power meter. The trainer will broadcast power to Zwift. I suggest you also get a heart rate monitor.

yep that’s a good route to go down and as @Mike_Rowe1 said you wont need a power meter, however if you want one for using outside there are several pedal based power meters, as for the wheel on smart trainer I use an Elite Tui with Zwift without any problems