Problem with codes P0138, P043E and etc

Hello all. I just have few questions if anybody could consult me. i have bought my prius 2013 here in my country Georgia, it was delivered from USA. Car had damage at the left side but I bought it already fixed. In two days from purchase check engine light came on and it has been a month already and I am still trying to get the answer. It was diagnosed by so many mechanics here in Georgia. I have codes of errors, they are in pending P0138, P0301 and in current P043E, P043F, P0456, P2401, P2402, P2419. (Problem of EVAP). Actually when I have diagnosed it in the centre of Toyota in the moment of buying check engine light was off and all the errors were deleted, I have trusted the seller that nothing was wrong and he has changed some little detail in the cylinder, like spark plug or sth like that, it was my fault that I trusted him but what can I do now? here in my country told me that I have to change a fuel tank! Thanks in advance.

 

BZzap! Thank you very much for your response, I am going to repair it tomorrow, actually I am more afraid of the codes P0138 and P0301 which are oxygen sensor circuit high voltage (Bank 1, sensor 2) and cylinder 1 misfire detected, they are in pending condition but I am afraid it will become current anytime. Previously I had cylinder 4 misfire detected, I have changed spark plugs and it has worked, but later in two weeks I have again felt the vibration of car while accelerating and that is the main issue I am concerned about, Fuel tank can be changed here easily and it does not cost me too much, but the problem with cylinder threatens me so much. Could this cylinder 1 misfire problem be connected to the problem of EVAP? or caused from the problems of EVAP? Thank you so much

 

Thank you all for your consult and support, I am going to service tomorrow. I have heard about EGR and also injectors, hope cleaning them will help me resolve my problem.