307 transmission problem

Hi, I am new to your friends.
I bought 307 xs 2002 model 10 days ago as I mentioned in the title
There was buzzing in the gearbox, I replaced it with bp brand oil but
now I started to have difficulties in shifting gears if you help
Rejoices ..
+ my car is at 99,000 and has been in front of the door without working for two years
I have all the maintenance of the vehicle, my vehicle information is good in terms of repair but
As I know it is difficult to find the master, I could not get out of the job.
Izmir..

Is the vehicle automatic or manual

manual