1)Increase your slippage, the higher, the better.
2) Increase your gas (15, 350000)
3) Remove decimals, use whole numbers and round down (e.g. if you are trying to sell 592038493.20395, enter the amount 592038492 manually)
4) Use a different wallet (safepal, trustwallet, metamask)
5) Try to reduce the amount you sell. Some currencies have a maximum transaction limit.
6) Ask the coin developers to decrease the automatic liquidity range or have it turned off.
7) If none of the above works, you have probably bought a coin that you cannot sell.