Around here you can find people with strategies much better than mine but happy to help out as I can...

The most simple one is a classic accumulation strategy. You basically analyse the daily chart and try to find a coin that has lost 40-50% of its value. You buy, and keep it till it double (just set an alert and forget about it) when it doubles sell half of the coins (get back your original amount) and from there set few new alert for new selling points i.e. when it doubles again, sell 30% and so on...

It is super simple but it works really well and it helps you to avoid all the FOMO :)