any tips for taking big dick

so last night i lost my virginity to this guy ive been speaking to for a while. he knew i was a virgin so he took it slow with me. to be honest he has a pretty big dick and we used lube but i never really felt “good” i guess. it just hurt a little and felt like a lot of pressure inside of me. we tried a lot of different positions but never really got consistent lol. i needed a few breaks. my hole was begging for them. anyways is this because it was pretty much my first time putting something up my butt or can i get better at taking it over time? any advice is greatly appriciated.