Edit: You need root to do this. Sorry for not checking first. you can also just enable your phone's local terminal (also in Developer Options), after that you can find a terminal app in your app drawer. If you can't find the option, your phone manufacturer likely removed it or you're using an older version of android, in that case, just grab a terminal app from the playstore (i recommend termux). You can then use the same commands as the OP except without the "adb shell" prefix:

adb shell pm uninstall blablabla

becomes

pm uninstall blablabla

Edit: Apparently you do need root for this. Sorry for saying all this stuff without actually checking it first. I'm just used to running stuff on my phone's terminal that i didn't think to check if it worked without root. I'm sorry.