I bought minecraft java and it is very stuck and I already lowered all the efps and I was very slow

Today I bought minecraft java edittion but I am very lagged by the device in which I bought it even though I already reduced all the EFPS but still I have been very lagged and I would like a refund so I can buy minecraft bedrock edittion then What I want is to get my money back from minecraft java edittion so I can buy minecraft bedrock so that I can go better and not lag so much