Have not driven a lotus around spa but will try. I dont know corner numbers so if its confusing just say. I use 9,10 or 11 aero wings. Will test after patch.
How I drive sector 2 is, brake late at the end of the long straight (there is a sign on the left, safety car sign i think, which is a good brake indicator) and turn in sharp bouncing 1 tyre over the curb on the right. 3rd gear.
Take the right hander flat out then (you can go a little wide here) then drop down the 3rd from 6th as you turn into the hairpin exiting in 2nd.
Take the next left hand turn flat out maybe drop down a gear if your not running high wings. 4th gear.
You might be able to reach 7th gear by the next turn in, but I presume 6th in the Lotus . Take that flat out if you can and get as close to the curb on the left but dont touch it then drop down 1 gear to slow you down and maybe even lift off slightly before you hit the curbs on the right, try not to hit these as you will bounce over them and go wide.
The next 2 corners are tricky and you can take them various of ways. I turn in early. 4th gear.
Down hill for the right hander turn in early clipping the club on the right. 3rd gear.
Ok so I rambled a lot. Hope it helps. If you want a video I can make 1 later tonight.