Visiting Senegal - onward travel requirement
I am considering visiting Senegal for the first time. I don't know how long I want to stay there, maybe 2 weeks maybe 5, unsure. The issue is: it says it is necessary to have proof of onward travel. As I won't have a return ticket, this makes things difficult.
As I would also like to maybe visit Gambia I thought to buy a bus ticket beforehand but I have not been able to get into the Dem Dikk app as the sms confirmation texts don't arrive. I thought to buy a plane ticket instead but it would cost so much more, plus I do not know what day I want to go so it is not a great option either...
I also thought about getting a refundable return ticket with Iberia/Vueling but both seem to only to credit refunds not cash refunds.
Any other ideas or personal experience?
For context I am Polish, but I would be flying from the UK.