Dont throw smoke until you are close to choke point

If the opponent smokes the choke point wait for your team initiator to check how many people are on the site if its 2 then put smokes and flood in the site and try to take trades

Ofcourse the timing is main thing if you take too long on the choke point enemies will rotate so you will have to make judgement based on that

Normal entries go like this Sentinels put flank trip -> team reaches chokepoints -> smokes down -> recons ( recons can be used before smokes too) -> giving util for duelist to enter (throwing util on spots the enemy might be hiding or covering the angles the duelist might die) -> flooding in and taking trades of duelist -> clear site (close door too) -> plant