Girl choosing to get married or study online

Q: A proposal has come for me but my parents are not calling them so that they can come to our home. They are waiting for their call. Meanwhile, they are signing me up for an online university. As I’m unmarried, I have alot of thoughts about marriage and I cannot stop thinking about it to the point that any mention of marriage makes me feel sad that I’m not part of this union with someone.

What should I pray to Allah (Subhanahu wa Ta’ala) for? For the best solution, whether it is marriage or studying online, or should I beg Him for a good spouse?

Wearing semi transparent clothing

Q:  Some of my clothes are only see-through when looked at closely. The skin can only be seen underneath if there is enough light and if I look very closely but to an onlooker from afar, they would not be able to see my skin. Am I allowed to wear such clothes during Namaaz, which are opaque and not transparent but only see-through from a near distance?

Repentance

Q: I would like to ask the following question on repentance

1. Does repentance wipe out previous sins?

2. Am I always obliged to confess to the one whom I've wronged even if this might bring severe enmity?

3. How do I feel regret during repenting?