averaging down by selling at a loss

i bought alot of CAD hedged tech stocks after thinking that the correction was over (i know, never time the market blah blah blah). it was going good until this inflation scare and probably triggering algo trading and getting rid of new retail traders. im about 4% down on most of them. i was thinking of selling half on a loss and buying back to average down due to lack of capital. im currently on a tax free savings account (Canadian account) , so i dont really see any repercussion. you guys think its a good idea or bad idea? thinking of doing it at 7-8% loss.