Each trade style has a max size for all trades. (day, swing etc).
Each trade has a max size.
Keep to your maximum and make the maximum small enough so you don't sweat it if you take a stop loss.
The main deal is try to keep in the game. Don't blow up. On the other hand, do not be so risk adverse to miss out on trades your system call for. Use a spreadsheet to create your trade allocations.
E.g. I sold some PATH today. I had it at 2 x allocation*, i.e. over allocated, on purpose. When I got over BE++, I sold 1/2. Holding the other half. Made money on the "BE++", but *could have made more, but setting my allocation correct was more important. Meanwhile, I took the over allocated funds, and bought HOOD and TOST. Both are slightly up. Overall, not a great trade since the drawdown was larger than the profit on the BE++. However, the other 1/2 is up 30% and equal to the drawdown now. These are swing trades.
* Some might think what is the point of Max if you over allocate. It is just like being over budget. It is OK as long it is justified, but the key is you know you are and are cautious and not "going unlimited crazy".