If you do not have specific topics, you can try writing a diary or a journal in English. This format gives you motivation to write everyday and you are not limited in topics. If you want to stick to more of academic type of writing, check out grammarly.com or literacyideas.com. they have great selection of topics for essays.

I am learning French, so what I do is write summaries of films I see or books I read in my target language! the website "context reverso" helps a lot with writing idioms and fixed expressions! I hope this helped!

You can write about your favorite movie.

You can write about your daily routine or write about your surroundings,the things that makes you happy or sad.

If you are a newbie to the language. Writing about your daily happenings would be a fresh start