Technical charts for long term investment

What are the technical analysis for the long term stock investments?
Any recommended strategies like?
Do we buy at support or do we buy at break outs ? What candle chart setting to use: 200 month/week SMA/DMA ?
Most stocks are making lower top and lower top and lower bottoms gradually. The reversal may be very sharp and may be tough to catch.

Learn to draw support, resistance, trend lines. Once stock comes to support or lower trend line on monthly chart, buy for long term. But you never know which stock will follow DHFL’s destiny.