If you wish to practise and hone your linguistic skills, there are a lot of free courses available online at the Open University.
These are self-study and require no fees, they also do not give any qualification of value, but you do usually gain a completion certificate in pdf form.
See here for the full catalogue of courses available for free at the Open University.
City of Portsmouth College 2022-23 Catalogue (Many classes including ESOL, French, German, Italian and Spanish)
