Equaliser with left, right independent adjust

PowerAmp or simplier Wavelet. However, without a tonal audiogram made by a calibrated audiometer and a professional, all would be a bit of a rule of thumb.

𝐓𝐡𝐚𝐧𝐤𝐬 𝐛𝐮𝐭 𝐢 𝐰𝐚𝐧𝐭𝐞𝐝 𝐢𝐭 𝐚𝐬 𝐚 𝐬𝐲𝐬𝐭𝐞𝐦 𝐚𝐝𝐣𝐮𝐬𝐭𝐦𝐞𝐧𝐭, 𝐧𝐨𝐭 𝐩𝐚𝐫𝐭 𝐨𝐟 𝐚 𝐦𝐮𝐬𝐢𝐜 𝐩𝐥𝐚𝐲𝐞𝐫 𝐚𝐩𝐩. 𝐄𝐬𝐬𝐞𝐧𝐭𝐢𝐚𝐥𝐥𝐲, 𝐚𝐝𝐣𝐮𝐬𝐭𝐢𝐧𝐠 𝐭𝐡𝐞 𝐬𝐨𝐮𝐧𝐝 𝐚𝐬 𝐢𝐟 𝐞𝐚𝐜𝐡 𝐞𝐚𝐫𝐛𝐮𝐝 𝐡𝐚𝐝 𝐛𝐞𝐞𝐧 𝐚𝐝𝐣𝐮𝐬𝐭𝐞𝐝 𝐟𝐨𝐫 𝐦𝐲 𝐩𝐚𝐫𝐭𝐢𝐜𝐮𝐥𝐚𝐫 𝐡𝐞𝐚𝐫𝐢𝐧𝐠 𝐩𝐫𝐨𝐟𝐢𝐥𝐞 𝐟𝐨𝐫 𝐞𝐚𝐜𝐡 𝐞𝐚𝐫.

𝐘𝐞𝐬, 𝐢 𝐮𝐧𝐝𝐞𝐫𝐬𝐭𝐚𝐧𝐝 𝐭𝐡𝐚𝐭 𝐩𝐫𝐨𝐟𝐞𝐬𝐬𝐢𝐨𝐧𝐚𝐥 𝐚𝐮𝐝𝐢𝐨𝐠𝐫𝐚𝐦 𝐭𝐞𝐬𝐭 𝐫𝐞𝐬𝐮𝐥𝐭𝐬 𝐚𝐫𝐞 𝐮𝐬𝐞𝐝 𝐚𝐬 𝐭𝐡𝐞 𝐛𝐚𝐬𝐢𝐬 𝐟𝐨𝐫 𝐬𝐮𝐜𝐡 𝐚𝐝𝐣𝐮𝐬𝐭𝐦𝐞𝐧𝐭𝐬 𝐛𝐮𝐭 𝐰𝐨𝐧𝐝𝐞𝐫𝐞𝐝 𝐡𝐚𝐝 𝐚𝐧𝐲𝐨𝐧𝐞 𝐞𝐯𝐞𝐫 𝐠𝐨𝐧𝐞 𝐝𝐨𝐰𝐧 𝐭𝐡𝐢𝐬 𝐩𝐚𝐫𝐭𝐢𝐜𝐮𝐥𝐚𝐫 𝐫𝐚𝐛𝐛𝐢𝐭 𝐡𝐨𝐥𝐞?

Apple Airpod Pro 2 earbuds will do this for you.
I don’t know of anything similar in the Android world, but maybe Sony earbuds as their over the ear headphones have inbuilt equalization