Yeah lots of various signal providers there and very flexible search you should definitely find something according to your needs
You can choose a trader who uses limit orders instead of market orders. This can help you reduce slippage by ensuring that trades are executed at a specific price rather than at the prevailing market price. Of course, choosing such a trader is not an easy task. It takes a lot of research to find the perfect trader to follow.
I guess it can, like it would depend on how long you gonna keep it going and whos trade you will be copying, i think it can be long term.
Copy trading can only be used for short term and once we learn how to trade profitably we can start showcasing our own skills so the other new traders copy our traders and make money.
I agree with @trader_phil Copy trading can be used as a long-term investment strategy but it's important to choose a reliable platform and trader.
You can try out aximtrade copy trading, they have an easy and quick copy trading process with clear info on the manager strategy but i definitely would suggest you check and think carefully before committing to any copy-trade.
but that is really difficult to find a reliable platform , because most of the platform are found to be scam.