It does not matter how small and big is your transaction, the power used to validate that transaction will be remain same, and the transaction fee will also, so even if you are doing $50 or $5 transaction the transaction fee will remain the same. I hope you understand now. If still not, then the best way is to go to any explorer for example blockchair, once you will go there you can see the transaction fee for every single transaction on different priority levels.

If you don't know what are priority levels then, your high or lower transaction fee will make your transaction high or lower accordingly. The best way to complete your transaction is keep your transaction fee high by using the RBF.
You can use lighting network if you are facing some problem of high fee which we all are facing actually but keep in mind that you still have to actual fee that you have to pay normally. But it is for only single time, so after that you can make multiple transaction to that channel and if you are going to make a transaction to another channel then you have to shift that channel.