Why is my Uniswap failing?

Could you please explain to me why my Uniswap transactions are failing? I've been trying to swap some tokens but it seems like the process is constantly stalling or encountering errors. I've double-checked my wallet balance and connection, but everything seems fine. Could it be a network issue? Or is there something else I'm missing? I'm quite new to this and would really appreciate your help in understanding what might be causing the problem.