Is it forbidden to have knowledge of a girl with the intention of proposing to her, and to communicate with her or her family without engaging in forbidden conversations or relationships?

There is no harm in seeking to find a girl's Telegram account and speaking with her regarding a marriage proposal, provided that Sharia guidelines are observed and temptation is avoided. It is preferable that the mother undertakes communication with her. It is recommended to verify the girl's righteousness by asking trustworthy individuals about her, then perform Istikhara before taking any step.