Hi Khadija,
It's good that you're trying. I know it may take some time to find people to speak with. There are some teachers on italki that charge $4.00 for a half hour. If it's tough to get conversation partners, that could be a good option for you.
Here are a couple of topics that people might respond to:
1) What are some books you've read recently? Did you like them? Which one was your favorite and why?
2) I personally like this topic a lot because I find that EVERYONE has an opinion about it and wants to talk about it. You should try talking about the FUTURE.
For example:
How long will it take for driverless cars to be the only cars on the road?
Do you think it will be illegal for humans to drive in the future?
Do you think cars will be able to go "off road" to areas without many people?
I think a lot of people find those types of conversations really interesting. You should try that!