Your swim suit is the first and last thing which will have an impact on how you swim. When you buy the cheap swimming attire then it will be soggy and heavier and will act as resistance.
I did buy the cheap swimming short and boom I was happy because I saved the money. But about after a year, I bought the speedo shorts and boy was I happy. The shorts was light and when I got into the pool, it got lighter. It was magical that the cloth got lighter despite being wet in water.
It was as if I wasn’t wearing anything. So go on and buy the best shorts which you can. The swimming is going to only get better.