Android doesn’t let you customize the Sharesheet as much as you’d like to, but you can definitely pin certain apps so that they’re easier to share. For example, if you find yourself sharing memes from Chrome to Telegram, you can pin Telegram to the top of the share list for quicker access.
Hit the share button in any app, swipe right and tap More. Now you can tap and hold any app and select the Pin option. Alternatively, you could try third-party share sheet apps such as Sharedr, but remember that these apps won’t work well with Android 12. Google has tightened the rules for Sharesheet apps, and you won’t be able to get them to replace Android’s stock share sheet from Android 12 onwards.