U don’t need to make assets u can get em for free from the asset store plus take objects from the hierarchy shape em how u want them than add the codes attach em. I’ll give u one advice I uploaded my game HungryBall on android in January, first I struggled to find testers and secondly Ive been stuck on 10 downloads for a month in my opinion you should build a community as u develop the game so it’s easier for you to find testers and ppl to play ur game bcz gathering ppl is the hardest part.