307 1.6 gasoline shaking problem

Hi friends, it has been 2 weeks since I bought my 307 1.6 gasoline car. Filters, oils, spark plugs or something. There is a tremor in the vehicle that I cannot understand why, doing it in 1st gear, in 2nd gear and in 3rd gear, not in 4 and 5. I wonder if anyone has a similar problem or if they live and find a solution. I request your help.

footnote: vehicle 2004 model

There are several possibilities: Throttle, Speed Sensor or Exhaust oxygen sensor.
Thanks to me 3 of them all failed.

When we connected it to the computer while buying it, it gave the oxygen sensor malfunction, my mechanic said nothing serious, could it be that?

did you have the same problem? well when you change it?