Kindred

Usually not a worthy ban in lower elo since they suck
Hardest Counter, good ban choice, I play kindred secondary so I don't ban them. Perma invades, their ult counters yours, destroys early. too much range and mobility. Also an otp champion, and otps are scary. Make sure your laners ward your camps early and help you if they invade, but it's really a terrible matchup.

Evelynn

Udyr

Bel'Veth

Also a otp champion, a very good ban. Will invade you and destroy you.

Ekko

My personal permaban. Just too op, and a otp champ at that

Shaco

You are his hardest counter. Invade his raptors before they spawn with your team and break his boxes to ruin his clear (may be hard to get team coordination in low ELO). Buy sweeper and control wards, but it's really not that hard.

Briar

Kinda overpowered in the current meta (as of 25.22) and has been for a while. Probably the best ban in low ELO.

Master Yi

Yi is a hard matchup. He like you need gold to carry. The way I beat him is by running exhaust and invading him. With exhaust (as long as enemies laners don't come) you should win your fight. From then on, use your better tempo and invade and deny him his gold. He should be easy to deal with then (so long as your teamates don't troll)