Since you’re such a low level, make sure you know what types work best against each other. You also want to use lucky eggs to get your level up as quickly as possible
If you live in an active pogo community, you will want to focus on legendary raids and the popular level four raids (tyranitar, absol, aggron). They will give you the most xp and give you the strongest mons you can get at your current level. You will need to team up with strong trainers in order to take them down. I would ignore level 2 and 3 raids for now as they will be impossible for you to take down alone at this point and other trainers usually don’t bother with them, so there is no help.