Where to test smart contracts?

Hello there,

I have a token contract I want to test. Specifically, I have to create a liquidity pool on Uniswap (or others), and be able to trade to test out different functionalities.

I used to be able to deploy testnet tokens and juggle with trades and LPs easily, but can't find a way around now.

The contract I want to test has in its code a V2Bakery part, and I've properly included the Sepolia Uniswap contract found in their docs.

I have been using Sepolia testnet to deploy and test.

Is there a way to test token contracts nowadays?